Use the A-Z list to browse more than 6,000 health-related topics in our library. Clicking on a term opens the definition and, in most cases, links to more information.
A measure for determining if a tumor is growing slowly (low result) or at a fast rate (high result). It is the percentage of cells that are replicating their DNA, an indication that they are preparing to split (multiply). More Information on S Phase Fraction: Cancer Basics
"SA Block" is more commonly referred to as "Sinoatrial Block" in the medical community. Sinoatrial Block
Also Known As: "Sinus Node Block"
An abnormal heart rhythm caused by a delayed or blocked transmission of electrical impulses through the sinoatrial node of the heart. More Information on Sinoatrial Block: Arrhythmia
"SA Node" is more commonly referred to as "Sinoatrial Node" in the medical community. Sinoatrial Node
Also Known As: "Sinus Node"
The heart's natural pacemaker. Located in the upper-right chamber of the heart (right atrium), it sends signals that tell the heart's lower chambers to contract and pump. More Information on Sinoatrial Node: Arrhythmia
"SAARDs" is more commonly referred to as "Slow Acting Antirheumatic Drugs" in the medical community. Slow Acting Antirheumatic Drugs
A type of disease-modifying antirheumatic drugs (DMARDs). They are used to alter the course of the rheumatoid arthritis and prevent joint and cartilage destruction. They work more slowly than nonsteroidal anti-inflammatory drugs (NSAIDs). More Information on Slow Acting Antirheumatic Drugs: Arthritis
Also Known As: "Acid Saccharin, Sodium Saccharin, Calcium Saccharin"
An artificial sweetener that is between 300 to 700 times sweeter than sucrose. Because it is not digested or absorbed, saccharin does not contribute calories to a person's diet. More Information on Saccharin: Carbs & Sugars
"Sacral Nerve Root Cysts" is more commonly referred to as "Tarlov Cysts" in the medical community. Tarlov Cysts
Also Known As: "Perineural Cysts"
Fluid-filled sacs that most often affect nerve roots in the sacrum. These cysts compress nerve roots and cause lower back pain, sciatica, urinary incontinence and sexual dysfunction. Women are at much higher risk than men. More Information on Tarlov Cysts: Back, Neck & Shoulder Pain
A procedure used to reduce fecal incontinence caused by nerve damage. A device surgically implanted in the abdomen delivers electrical impulses to the sacral nerve that controls bowel and anal sphincter functioning. More Information on Sacral Nerve Stimulation: Digestive Treatments
A device that is implanted under the skin in the abdomen. It is used to regain bowel control after nerve damage. More Information on Sacral Nerve Stimulator: Digestive Treatments
Curved triangular bone at the base of the spine composed of five vertebrae that are fused together to form a bone mass. The bones are connected to the last vertebrae (the coccyx) and the hipbone on each side. More Information on Sacral Region: Back, Neck & Shoulder Pain
"Sacroiliac Belts" is more commonly referred to as "Back Braces" in the medical community. Back Braces
Also Known As: "Lumbosacral Belts, Raney Flexion Jackets, Lumbar Braces, Williams Braces, Hyperextension Braces, Chair Back Braces, Molded Jackets"
Devices used to help stabilize the lower back. There are many types, including various belts, corsets, braces and jackets. More Information on Back Braces: Head & Spine Injury
The juncture in the lower area of the spinal cord between the sacrum (curved bone at the base of the spine) and the ilium (part of the pelvis where the hip bones connect). More Information on Sacroiliac Joint: Back, Neck & Shoulder Pain
Also Known As: "Sacroiliac Joint Inflammation, Sacroiliac Joint Syndrome"
Inflammation and dysfunction of one or both sacroiliac joints that connect the base of the spine (sacrum) to the pelvic bone. It can cause lower back pain and/or buttocks pain. More Information on Sacroiliac Joint Dysfunction: Back, Neck & Shoulder Pain
Also Known As: "Sacroiliac Joint Syndrome, Sacroiliac Joint Dysfunction"
Inflammation and dysfunction of one or both sacroiliac joints that connect the base of the spine (sacrum) to the pelvic bone. It can cause lower back pain and/or buttocks pain. More Information on Sacroiliac Joint Inflammation: Back, Neck & Shoulder Pain
Also Known As: "Sacroiliac Joint Dysfunction, Sacroiliac Joint Inflammation"
Inflammation and dysfunction of one or both sacroiliac joints that connect the base of the spine (sacrum) to the pelvic bone. It can cause lower back pain and/or buttocks pain. More Information on Sacroiliac Joint Syndrome: Back, Neck & Shoulder Pain
Also Known As: "Sacroiliac Joint Syndrome, Sacroiliac Joint Dysfunction, Sacroiliac Joint Inflammation"
Inflammation and dysfunction of one or both sacroiliac joints that connect the base of the spine (sacrum) to the pelvic bone. It can cause lower back pain and/or buttocks pain. More Information on Sacroiliitis: Back, Neck & Shoulder Pain
Curved triangular bone at the base of the spine composed of five vertebrae that are fused together to form a bone mass. The bones are connected to the last vertebrae (the coccyx) and the hipbone on each side. More Information on Sacrum: Back, Neck & Shoulder Pain
"SAD" is more commonly referred to as "Seasonal Affective Disorder" in the medical community. Seasonal Affective Disorder
Depression that occurs on a seasonal basis, most often in winter. The cause is unknown but may be related to body temperature, hormone regulation and ambient light. Treatments may include antidepressants and light therapy. More Information on Seasonal Affective Disorder: Depression & Bipolar
"SADS" is more commonly referred to as "Sudden Arrhythmia Death Syndrome" in the medical community. Sudden Arrhythmia Death Syndrome
Any abnormal heart rhythms (arrhythmia) that increases the risk of sudden cardiac death. Long QT Syndrome is the most common example. More Information on Sudden Arrhythmia Death Syndrome: Arrhythmia
"SAECG" is more commonly referred to as "Signal Averaged EKG" in the medical community. Signal Averaged EKG
Also Known As: "SAEKG, Signal Averaged Electrocardiogram"
A type of EKG. It uses a computer to filter signals called "late potentials" to allow for a more detailed analysis of the heart's electrical function. May be used to assess the potential danger of ventricular arrhythmias (abnormal heart rhythms). More Information on Signal Averaged EKG: Heart Imaging & Rhythm Tests
"SAEKG" is more commonly referred to as "Signal Averaged EKG" in the medical community. Signal Averaged EKG
Also Known As: "Signal Averaged Electrocardiogram, SAECG"
A type of EKG. It uses a computer to filter signals called "late potentials" to allow for a more detailed analysis of the heart's electrical function. May be used to assess the potential danger of ventricular arrhythmias (abnormal heart rhythms). More Information on Signal Averaged EKG: Heart Imaging & Rhythm Tests
"Safe Handling of Chemotherapy Drugs" is more commonly referred to as "Chemotherapy Drug Handling" in the medical community. Chemotherapy Drug Handling
Chemotherapy medications require special handling to ensure the safety of patients and others who may come into contact with the drugs. More Information on Chemotherapy Drug Handling: Cancer Drug & Medication
A national organization that works to prevent illness and death associated with foodborne illness. It works with government agencies and industry to encourage practices and policies that promote safe food.
"Saint Vitus Dance" is more commonly referred to as "Sydenham Chorea" in the medical community. Sydenham Chorea
Also Known As: "Sydenham Disease"
A complication of rheumatic fever characterized by uncontrolled repetitive, jerky movements (chorea) that can last for several months. More Information on Sydenham Chorea: Movement Disorders
A salt of salicylic acid that is present in some foods, beverages, cosmetics and medications, including aspirin (acetylsalicylic acid). Medications containing this salt may be referred to as salicylates.
An increased sensitivity to salicylate (salt of salicylic acid) that may result an allergic reaction. Salicylate is present in some foods, beverages, cosmetics and medications, including aspirin (acetylsalicylic acid). More Information on Salicylate Allergy: Cosmetic, Chemical & Metal
An increased sensitivity to salicylate (salt of salicylic acid) that may result an allergic reaction. Salicylate is present in some foods, beverages, cosmetics and medications, including aspirin (acetylsalicylic acid). More Information on Salicylate Sensitivity: Cosmetic, Chemical & Metal
A fluid composed of water, protein and salts present in the mouth that begins digestion and assists swallowing. More Information on Saliva: Oral Health Basics
An enzyme produced by the salivary glands that begins carbohydrate digestion in the mouth. This process continues in the stomach after the food and saliva have been swallowed.
Diseases or disorders of the salivary glands (found in and around the mouth and throat that secrete saliva, initiate digestion and help protect teeth from decay). This includes infection, stones and other problems. More Information on Salivary Gland Disease: Mouth & Tongue Disorders
Diseases or disorders of the salivary glands (found in and around the mouth and throat that secrete saliva, initiate digestion and help protect teeth from decay). This includes infection, stones and other problems. More Information on Salivary Gland Disorders: Mouth & Tongue Disorders
A bacterial infection due to blockage of ducts in the salivary gland through which saliva flows to the mouth. It occurs in the elderly and people debilitated by illness, recovering from surgery or undergoing cancer treatment. More Information on Salivary Gland Infection: Oral Infections
Stones made up of layers of calcified organic matter that cause painful swelling of the salivary gland. They must be removed surgically or by using a finger to squeeze the stone from the gland into the mouth. More Information on Salivary Gland Stones: Mouth & Tongue Disorders
Glands found in and around the mouth and throat that secrete saliva, initiate digestion and help protect teeth from decay. They include the parotid, submandibular and sublingual glands. More Information on Salivary Glands: Oral Health Basics
A bacterium often associated with food poisoning due to eating contaminated meat. It may cause intestinal infection and diarrhea. More Information on Salmonella: Gastroenteritis & Food Illness
Also Known As: "Salmonella Poisoning, Salmonellosis"
An intestinal infection caused by the salmonella bacterium. It is often associated with food poisoning due to eating contaminated meat, poultry, eggs or unpasteurized milk or contact with infected animals. More Information on Salmonella Infection: Gastroenteritis & Food Illness
An intestinal infection caused by the salmonella bacterium. It is often associated with food poisoning due to eating contaminated meat, poultry, eggs or unpasteurized milk or contact with infected animals. More Information on Salmonella Poisoning: Gastroenteritis & Food Illness
"Salmonella Typhi Infection" is more commonly referred to as "Typhoid Fever" in the medical community. Typhoid Fever
Also Known As: "Typhoid, Enteric Fever"
A foodborne illness typically contracted during travel to developing countries. Salmonella typhi bacteria travel throughout the body via the bloodstream. Symptoms include diarrhea and a rash on the abdomen and chest. More Information on Typhoid Fever: Tropical Disease
An intestinal infection caused by the salmonella bacterium. It is often associated with food poisoning due to eating contaminated meat, poultry, eggs or unpasteurized milk or contact with infected animals. More Information on Salmonellosis: Gastroenteritis & Food Illness
Surgical removal of one or both fallopian tubes (bilateral). When performed at the same time as oophorectomy (removal of the ovaries), it is called salpingo oophorectomy. More Information on Salpingectomy: Uterine & Ovarian Health
"Salpingectomy Oophorectomy" is more commonly referred to as "Oophorectomy" in the medical community. Oophorectomy
Also Known As: "Bilateral Salpingo Oophorectomy, Ovary Removal, Unilateral Oophorectomy, Ovariectomy, Bilateral Oophorectomy, Bilateral Ovariectomy, Salpingo Oophorectomy"
Surgical removal of one (unilateral) or both (bilateral) ovaries. It is used to treat cancers, cysts or uterine disorders. It may be performed alone of in combination with removal of the uterus (hysterectomy) or fallopian tubes (salpingectomy). More Information on Oophorectomy: Uterine & Ovarian Health
A type of pelvic inflammatory disease in which an infection rises from the vagina or cervix into the fallopian tubes. More Information on Salpingitis: Uterine & Ovarian Health
"Salpingo Oophorectomy" is more commonly referred to as "Oophorectomy" in the medical community. Oophorectomy
Also Known As: "Bilateral Salpingo Oophorectomy, Ovary Removal, Unilateral Oophorectomy, Ovariectomy, Bilateral Oophorectomy, Salpingectomy Oophorectomy, Bilateral Ovariectomy"
Surgical removal of one (unilateral) or both (bilateral) ovaries. It is used to treat cancers, cysts or uterine disorders. It may be performed alone of in combination with removal of the uterus (hysterectomy) or fallopian tubes (salpingectomy). More Information on Oophorectomy: Uterine & Ovarian Health
Salt (sodium chloride) is a naturally occurring crystal compound. Although sodium is a mineral that is needed by the body, some research has linked large intakes of salt to high blood pressure. More Information on Salt: Additives & Seasonings
Salt (sodium chloride) is a naturally occurring crystal compound. Although sodium is a mineral that is needed by the body, some research has linked large intakes of salt to high blood pressure. More Information on Salt & the Heart: Heart Diet & Fitness
"San Joaquin Valley Fever" is more commonly referred to as "Valley Fever" in the medical community. Valley Fever
Also Known As: "Coccidioidomycosis, Coccidioides Immitis Infection"
Illness caused by breathing in a fungus in soil that becomes airborne. It occurs in the Southwest and southern California and typically causes fever, chest pain and coughing. The illness typically disappears on its own. More Information on Valley Fever: Infectious Disease Basics
A genetic lipid storage disorder resulting in the progressive deterioration of the central nervous system. It is caused by a deficiency of the enzyme hexosaminidase, which causes an accumulation of lipids in the body. More Information on Sandhoff Disease: Pediatric Brain & Nerve
Also Known As: "Infantile Neuronal Ceroid Lipofuscinosis, Infantile NCL"
A type of neuronal ceroid lipofuscinosis, a progressive neurological disease that begins in childhood. It usually begins by age 2 and progresses rapidly, becoming fatal by age 5. More Information on Santavuori Haltia Disease: Pediatric Brain & Nerve
Phytochemicals found in many plant foods and oils. They may help reduce cholesterol absorption and fight cancer. They dissolve in water to form a soapy froth and some are potentially poisonous.
A family of viruses associated with mild gastroenteritis in children under the age of 5 years. More Information on Sapoviruses: Gastroenteritis & Food Illness
An inflammatory disease in which multiple granulomas (small growths) form in the lungs, lymph nodes and other organs. Among the many problems associated with the disease is joint inflammation (arthritis). It is usually chronic, but can be temporary. More Information on Sarcoidosis: Fibromyalgia & Pain Disorders
A form of cancer that begins within connective tissue, including the bones, cartilage, fat, tendons or muscle. More Information on Sarcoma: Cancer Basics
"Sarcoma Breast Leukemia Adrenal Gland Syndrome" is more commonly referred to as "Li Fraumeni Syndrome" in the medical community. Li Fraumeni Syndrome
Also Known As: "LFS, SBLA, SBLA Syndrome"
A rare genetic predisposition to develop a specific set of cancers, often abbreviated as SBLA: Sarcoma, breast cancer, leukemia and adrenal gland cancer. It is caused by a genetic mutation (change) in the p53 tumor suppressor gene. More Information on Li Fraumeni Syndrome: Cancer Risk Factors
A contagious and itchy skin disease caused by a very small species of mite. The mites burrow under the skin and deposit their eggs, forming a burrow that resembles a pencil mark. Scabies is spread by direct contact with infected individuals. More Information on Sarcoptes Scabei Infestation: Skin Related Infections
Also Known As: "SARS Disease, Severe Acute Respiratory Syndrome, SARS Virus"
A serious form of pneumonia first described in 2003 that results in acute respiratory distress and can be fatal. It can spread far and very rapidly -- the first outbreak began in Asia and infected thousands throughout the world in just six weeks. More Information on SARS: Pneumonia & Lung Infection
Also Known As: "Severe Acute Respiratory Syndrome, SARS Virus"
A serious form of pneumonia first described in 2003 that results in acute respiratory distress and can be fatal. It can spread far and very rapidly -- the first outbreak began in Asia and infected thousands throughout the world in just six weeks. More Information on SARS Disease: Pneumonia & Lung Infection
Also Known As: "Severe Acute Respiratory Syndrome, SARS Disease"
A serious form of pneumonia first described in 2003 that results in acute respiratory distress and can be fatal. It can spread far and very rapidly -- the first outbreak began in Asia and infected thousands throughout the world in just six weeks. More Information on SARS Virus: Pneumonia & Lung Infection
A type of fat that is solid at room temperature. It raises total cholesterol and LDL (or "bad") cholesterol levels in the bloodstream, which can dramatically increase the risk for heart disease. More Information on Saturated Fat: Fats & Oils
"SBLA" is more commonly referred to as "Li Fraumeni Syndrome" in the medical community. Li Fraumeni Syndrome
Also Known As: "LFS, SBLA Syndrome, Sarcoma Breast Leukemia Adrenal Gland Syndrome"
A rare genetic predisposition to develop a specific set of cancers, often abbreviated as SBLA: Sarcoma, breast cancer, leukemia and adrenal gland cancer. It is caused by a genetic mutation (change) in the p53 tumor suppressor gene. More Information on Li Fraumeni Syndrome: Cancer Risk Factors
"SBLA Syndrome" is more commonly referred to as "Li Fraumeni Syndrome" in the medical community. Li Fraumeni Syndrome
Also Known As: "LFS, Sarcoma Breast Leukemia Adrenal Gland Syndrome, SBLA"
A rare genetic predisposition to develop a specific set of cancers, often abbreviated as SBLA: Sarcoma, breast cancer, leukemia and adrenal gland cancer. It is caused by a genetic mutation (change) in the p53 tumor suppressor gene. More Information on Li Fraumeni Syndrome: Cancer Risk Factors
A contagious and itchy skin disease caused by a very small species of mite. The mites burrow under the skin and deposit their eggs, forming a burrow that resembles a pencil mark. Scabies is spread by direct contact with infected individuals. More Information on Scabies: Skin Related Infections
"Scaffolding Device" is more commonly referred to as "Stenting" in the medical community. Stenting
Also Known As: "Coronary Stenting"
A procedure in which a wire mesh tube is inserted through a catheter and placed in an artery to hold it open. Stenting is usually performed right after a balloon angioplasty, while the catheter is still in place. More Information on Stenting: Catheter Tests & Procedures
"Scalded Mouth Syndrome" is more commonly referred to as "Burning Mouth Syndrome" in the medical community. Burning Mouth Syndrome
Also Known As: "BMS, Stomatodynia"
A condition that causes a burning or scalding sensation in the mouth, particularly on the lips and tongue, and generally with no visible signs of irritation. More Information on Burning Mouth Syndrome: Mouth & Tongue Disorders
Removal of calculus (tartar), plaque and stain that attach to the tooth surfaces, especially below the gum line along the root surface. It is the most conservative form of treatment for gum disease and is often performed with root planing. More Information on Scaling: Oral Health Basics
Fungal infection of the scalp. It may begin as a small sore resembling a pimple before becoming patchy, flaky or scaly. It may cause some hair to fall out or break into stubbles. The infection site may become swollen, tender and red. More Information on Scalp Ringworm: Skin Related Infections
A congenital malformation of the skull that causes it to be long and narrow. It is frequently accompanied by mental retardation. More Information on Scaphocephaly: Pediatric Brain & Nerve
Marks left on the skin by the healing of injured tissue. They are composed of fibrous tissue that is often raised and thickened, and may be pink to purple in color before fading to white over time. More Information on Scars: Skin Growths
"Scatter Photocoagulation" is more commonly referred to as "Photocoagulation" in the medical community. Photocoagulation
Also Known As: "Panretinal Photocoagulation, Focal Photocoagulation"
A primary treatment for diabetic retinopathy. A strong beam of light (laser) seals off bleeding blood vessels in the eye and burns away extra blood vessels that should not have grown there. More Information on Photocoagulation: Eye Conditions
One of several disorders known collectively as progressive pigmentary purpura. It results in a rusty brown skin discoloration marked with tiny red dots. Effects are usually cosmetic and do not pose danger. More Information on Schamberg Disease: Skin Discoloration
A mental structure that represents an aspect of the world and helps people organize current knowledge while providing a framework for future understanding. Examples include stereotypes, scripts and archetypes.
Also Known As: "Myelinoclastic Diffuse Sclerosis, Diffuse Sclerosis"
A progressive demyelinating disorder that is a variant of multiple sclerosis. It usually begins in childhood. Symptoms may include dementia, aphasia, seizures and personality changes. The course of the disease varies. More Information on Schilder's Disease: Pediatric Brain & Nerve
A test in which an iodine stain is applied to cervical tissue. Normal tissue becomes stained a brownish color while abnormal cells will remain an unstained white or yellow. While not a direct test for cancer cells, it is used to guide biopsies. More Information on Schiller Test: Brain & Nerve Cancer
A vitamin B-12 absorption test. Patients receive a drink and injection of vitamin B-12. Later, urine samples are collected and evaluated for traces of the vitamin. Low levels indicate a problem absorbing vitamin B-12. More Information on Schilling Test: Digestive Lab Tests
A congenital defect where one or more vertebrae are malformed. It may be identified by amniocentesis. More Information on Schistorrhachis: Birth & Genetic Disorders
An infection caused by one of the five species of parasite known as Schistosoma. Transmission occurs through contact with contaminated water. More Information on Schistosoma Infection: Parasitic Disease
An infection caused by one of the five species of parasite known as Schistosoma. Transmission occurs through contact with contaminated water. More Information on Schistosomiasis: Parasitic Disease
A developmental birth defect marked by abnormal slits in the cerebral hemispheres of the brain. Symptoms may vary, depending on whether clefts are found in one hemisphere or both hemispheres. More Information on Schizencephaly: Pediatric Brain & Nerve
Also Known As: "Depressive Schizoaffective Disorder, Bipolar Schizoaffective Disorder"
A condition in which a person exhibits signs of both schizophrenia (including hallucinations or delusions) and mood disorder (e.g., very high or very low moods, sleeping problems). More Information on Schizoaffective Disorder: Schizophrenia & Psychosis
Personality disorder marked by social isolation and a pattern of indifference to others. It shares risk factors with schizophrenia, but is not characterized by disabling symptoms such as hallucinations and delusions. More Information on Schizoid Personality Disorder: Personality Disorders
A complex and serious brain disorder that makes it difficult to distinguish between real and unreal experiences, think logically, have normal emotional responses to others, and behave appropriately in social situations. More Information on Schizophrenia: Schizophrenia & Psychosis
A brain disorder that makes it difficult to distinguish between real and unreal experiences. It is less common in adolescence than adults and rare in children under 13. Children with hallucinations or delusions should see a health care professional. More Information on Schizophrenia & Children: Schizophrenia & Psychosis
A mental disorder characterized by the signs and symptoms of schizophrenia but that lasts less than six months. Many people who are diagnosed with this disorder are later diagnosed with schizophrenia. More Information on Schizophreniform Disorder: Schizophrenia & Psychosis
Something that causes schizophrenia, such as a stressful life situation. Often used to describe typical high-risk family situations and relationships that occur with many schizophrenia patients, such as a dominant, overly critical mother. More Information on Schizophrenogenic: Schizophrenia & Psychosis
A condition marked by a pattern of problems in interpersonal relationships and disturbances in thought patterns, appearance and behavior. Patients have odd beliefs and behaviors, but are not disconnected from reality. More Information on Schizotypal Personality Disorder: Personality Disorders
"Schlatter Osgood Disease" is more commonly referred to as "Osgood Schlatter Disease" in the medical community. Osgood Schlatter Disease
Inflammation of the tendon where the kneecap meets the top of the shinbone (patellar tendon). It causes swelling and tenderness. More Information on Osgood Schlatter Disease: Arm & Leg Pain
School places new demands and pressures on children and adolescents. Coping strategies include maintaining a stable home environment, positive relationships with schoolmates and participating in after-school activities, among others. More Information on School Issues: Stress
A tumor of the Schwann cells that are responsible for insulating the nerves. These are usually benign (noncancerous), but rare malignant cases have occurred. More Information on Schwannoma: Brain & Nerve Cancer
"SCI" is more commonly referred to as "Spinal Cord Injury" in the medical community. Spinal Cord Injury
Any injury or trauma to the spinal cord. It may result in a range of temporary or permanent sensory and motor problems as well as affecting bowel and bladder functions. More Information on Spinal Cord Injury: Head & Spine Injury
A painful condition in which pain occurs along the course of the sciatic nerve, which runs from the buttocks to the foot. It is usually caused by pressure on the nerve. More Information on Sciatica: Back, Neck & Shoulder Pain
"SCID" is more commonly referred to as "Severe Combined Immunodeficiency" in the medical community. Severe Combined Immunodeficiency
Also Known As: "Bubble Boy Disease, Severe Combined Immunodeficiency Disease, Severe Combined Immunodeficiency Syndrome"
A genetic disorder that severely compromises the immune system, leaving the infant with a greatly increased susceptibility to infection. More Information on Severe Combined Immunodeficiency: Pediatric Health Basics
"Scintigraphy" is more commonly referred to as "Radionuclide Imaging" in the medical community. Radionuclide Imaging
Also Known As: "Gamma Scanning, Radionuclide Scans, Perfusion Imaging, Radionuclide Isotope Injection"
An imaging test that introduces tiny amounts of radioactive materials (called 'tracers') into the body. The tracers emit energy that is used by gamma cameras to take very clear pictures of the desired area (e.g., the heart). More Information on Radionuclide Imaging: Heart Imaging & Rhythm Tests
"Scintillation Camera" is more commonly referred to as "Gamma Ray Camera" in the medical community. Gamma Ray Camera
Also Known As: "Gamma Camera, Gamma Scintillation Camera"
A special camera used in radionuclide imaging studies to produce an image of the target area. It detects radioactive energy emitted by a radionuclide "tracer" that was injected into the body before the test. More Information on Gamma Ray Camera: Heart Imaging & Rhythm Tests
Also Known As: "Miraluma Test, Sestamibi Breast Imaging"
A type of radionuclide imaging test that may be used in women with abnormal or inconclusive mammograms. It is not a screening test and is not used in place of mammograms. More Information on Scintimammography: Breast Cancer
"SCLC" is more commonly referred to as "Small Cell Lung Cancer" in the medical community. Small Cell Lung Cancer
Also Known As: "Oat Cell Carcinoma, Small Cell Lung Carcinoma, Oat Cell Cancer"
A type of lung cancer that accounts for 20 percent of all lung cancer diagnoses. It spreads more quickly than other types of lung cancer. There are several types of this cancer. More Information on Small Cell Lung Cancer: Lung & Chest Cancer
The white outer layer of the eyeball; the white of the eye. It can become red or pink due to many causes, including injury, infection or an allergic response. More Information on Sclera: Eye Conditions
A chronic, progressive condition involving the thickening, tightening or hardening of body areas. It primarily affects the skin, but can also impact joints, blood vessels and other body tissue. Treatment is similar to that of rheumatoid arthritis. More Information on Scleroderma: Psoriasis & Autoimmune Skin
A chemical that is injected into small residual varicose veins or spider veins to destroy their inner lining and cause the vessels to inflame, scar, seal off and disappear completely. They may also be applied to treat recurrent pleural effusions. More Information on Sclerosing Agent: Vascular Disease
A chemical that is injected into small residual varicose veins or spider veins to destroy their inner lining and cause the vessels to inflame, scar, seal off and disappear completely. They may also be applied to treat recurrent pleural effusions. More Information on Sclerosing Solution: Vascular Disease
Medical procedure used to eliminate varicose veins and "spider veins" by injecting a solution into the vein. Also, the use of hardening agents applied by a needle in an endoscope to an area in the upper gastrointestinal tract to stop bleeding. More Information on Sclerotherapy: Skin Drugs & Medications
A condition in which the spine curves to one side. Another section of the spine usually curves to the other side in compensation. More Information on Scoliosis: Birth & Genetic Disorders
"Scombroid Poisoning" is more commonly referred to as "Fish Poisoning" in the medical community. Fish Poisoning
Also Known As: "Tetrodotoxin Poisoning, Ciguatera Poisoning"
Food poisoning caused by eating fish products tainted by chemicals (not bacteria). This may be due to environmental issues, fish storage issues or because the fish ate something poisonous prior to being caught. Cooking does not remove toxins. More Information on Fish Poisoning: Gastroenteritis & Food Illness
"Scombrotoxic Fish Poisoning" is more commonly referred to as "Histamine Fish Poisoning" in the medical community. Histamine Fish Poisoning
Type of food poisoning caused by the ingestion of the chemical histamine which is common is spoiled fish. When a person eats spoiled fish, histamines can cause hives and flushing very similar to an allergic reaction. More Information on Histamine Fish Poisoning: Gastroenteritis & Food Illness
Sexual excitement gained through the viewing or exhibition of nudity or sexual activity. It is sometimes classified as active scopophilia (voyeurism) or passive scopophilia (sexual exhibition). More Information on Scopophilia: Impulse Control Disorders
"SCQ" is more commonly referred to as "Social Communication Questionnaire" in the medical community. Social Communication Questionnaire
Also Known As: "ASQ, Autism Screening Questionnaire"
A forty-item questionnaire developed to screen for autism using current diagnostic criteria that can be applied to all age groups. Previously known as the Autism Screening Questionnaire (ASQ).
"Scrapes" is more commonly referred to as "Cuts & Other Common Wounds" in the medical community. Cuts & Other Common Wounds
Also Known As: "Punctures, Abrasions, Lacerations, Scratches"
The most common skin wounds include cuts (a break or opening in the skin), lacerations (a jagged and irregular tear), scratches (minor scrapes from sharp objects), abrasions (rubbing away of the skin) and punctures (piercing by pointed object). More Information on Cuts & Other Common Wounds: First Aid & Safety
"Scratches" is more commonly referred to as "Cuts & Other Common Wounds" in the medical community. Cuts & Other Common Wounds
Also Known As: "Punctures, Scrapes, Abrasions, Lacerations"
The most common skin wounds include cuts (a break or opening in the skin), lacerations (a jagged and irregular tear), scratches (minor scrapes from sharp objects), abrasions (rubbing away of the skin) and punctures (piercing by pointed object). More Information on Cuts & Other Common Wounds: First Aid & Safety
"Screen Oxygenator" is more commonly referred to as "Membrane Oxygenator" in the medical community. Membrane Oxygenator
Also Known As: "Plastic Sheeting"
A mechanical device that adds oxygen to blood. Blood is passed over a series of screens or membranes that are in an atmosphere filled with oxygen. Oxygen is then exchanged on the thin film of blood that is on the screen.
"Screening Mammography" is more commonly referred to as "Mammograms" in the medical community. Mammograms
Also Known As: "Mammography, Diagnostic Mammography, Digital Mammograms"
An imaging test of the breast that uses x-rays to create images on film or a computer. It can be used to detect breast masses (screening mammography) or to further diagnose a breast condition (diagnostic mammography). More Information on Mammograms: Breast Cancer
An interactive screening measure consisting of 12 items in the areas of play, imitation and communication. Administration takes about 20 minutes. More Information on Screening Tool for Autism in Two Year Olds: Autism & Related Disorders
A condition in which fissures develop in the tongue, making it appear wrinkled. People usually are born with this condition, but it becomes more noticeable as they age. It typically is harmless and has no symptoms. More Information on Scrotal Tongue: Mouth & Tongue Disorders
"Scrub Typhus" is more commonly referred to as "Typhus" in the medical community. Typhus
Also Known As: "Murine Typhus, Typhus Fevers, Epidemic Typhus, Tick Typhus"
A rickettsial disease caused by either Rickettsia prowazekii or Rickettsia typhi. Lice and fleas transmit this infectious disease to humans. It is marked by high fever, a transient rash and fairly severe illness. More Information on Typhus: Tropical Disease
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