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ARTICLES (402)

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Squamous Cell Carcinoma of the Skin

Definition of Squamous Cell Carcinoma of the SkinSquamous cell carcinoma is a type of skin cancer containing squamous cells. Squamous cell carcinomas can be found in many parts of the body including the lungs, skin, anus, esophagus, head and neck areas, an...


Stable angina

Illustrations Alternative names Definition Causes, incidence, and risk factors Symptoms Signs and tests Treatment Expectations (prognosis) Complications Calling your health care provider Prevention Illustrations Hea...


Standard ophthalmic exam

Illustrations Alternative names Definition How the test is performed How to prepare for the test How the test will feel Why the test is performed Normal Values What abnormal results mean What the risks are Special considerations ...


Staph aureus food poisoning

Definition Causes, incidence, and risk factors Symptoms Signs and tests Treatment Expectations (prognosis) Complications Calling your health care provider Prevention Definition    Staph aureus food p...


Starch ingestion

Alternative names Definition Poisonous Ingredient Where Found Symptoms Home Treatment Before Calling Emergency Poison Control, or a local emergency number What to expect at the emergency room Expectations (prognosis) Alternativ...


Stasis dermatitis and ulcers

Illustrations Alternative names Definition Causes, incidence, and risk factors Symptoms Signs and tests Treatment Expectations (prognosis) Complications Calling your health care provider Prevention Illustrations Der...


STD and ecological niches

Illustrations Information Illustrations STDs and ecological niches Primary syphilis Information    Return to top The bald eagle is making a comeback following near extinction from the insid...


Steam iron cleaner

Alternative names Definition Poisonous Ingredient Where Found Symptoms Home Treatment Before Calling Emergency Poison Control, or a local emergency number What to expect at the emergency room Expectations (prognosis) Alternativ...


Stem cell research

Definition Information Definition    A stem cell is a "generic" cell that can make exact copies of itself indefinitely. In addition, a stem cell has the ability to produce specialized cells for various tissues in t...


Stent

Illustrations Definition Description Indications Risks References Illustrations Coronary artery stent Coronary artery balloon angioplasty - series Definition    Return to top A sten...


Stereotypic movement disorder

Definition Causes, incidence, and risk factors Symptoms Signs and tests Treatment Expectations (prognosis) Complications Calling your health care provider Definition    Stereotypic movement disorder is ...


Sterilization surgery -- making a decision

Illustrations Information Illustrations Hysterectomy Tubal ligation Tubal ligation - series Information    Return to top Sterilization surgery is called a tubal ligation in women a...


Sternoclavicular Joint Dislocation

Definition of Sternoclavicular Joint DislocationThe sternoclavicular (SC) joint is the pivot on which the shoulder girdle moves on the trunk. Dislocation of this joint most often results from a fall onto the shoulder.Description of Sternoclavicular Joint D...


Stevens-Johnson Syndrome

Definition of Stevens-Johnson SyndromeStevens-Johnson Syndrome is the most severe form of erythema multiforme and is characterized by ulcerated lesions on the skin and mucous membranes. It is a serious, sometimes fatal inflammatory disease. It is also know...


Stillbirth

Definition Definition    A stillbirth is when a fetus that was expected to survive dies during birth or during the late stages of pregnancy. Stillbirths may be due to injuries, illnesses (such as toxemia), infections...


Stimulants

Illustrations Definition Illustrations Electrocardiogram (ECG) Definition    Return to top Stimulants are medications that increase heart rate, breathing rate, and brain function. Some stimulants a...


Stimulus

Definition Definition    A stimulus is anything capable of evoking a response in an organism. Examples of stimuli include irritants, sights, sounds, heat, cold, smells, or other sensations. ...


Stingray

Definition Poisonous Ingredient Where Found Symptoms Home Treatment Before Calling Emergency Poison Control, or a local emergency number What to expect at the emergency room Expectations (prognosis) Definition    ...


Stoddard solvent

Alternative names Definition Poisonous Ingredient Where Found Symptoms Home Treatment Before Calling Emergency Poison Control, or a local emergency number What to expect at the emergency room Expectations (prognosis) Alternativ...


Stomach acid test

Illustrations Alternative names Definition How the test is performed How to prepare for the test How the test will feel Why the test is performed Normal Values What abnormal results mean What the risks are Illustrations ...



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