What is avascular necrosis Avascular necrosis also called osteonecrosis, aseptic necrosis, ischemic necrosis or femoral head necrosis, is the cellular death of the components of
What is angiosarcoma Angiosarcoma is an uncommon form of tissue cancer (sarcoma) that arises in the lining (vascular endothelial cells) of blood vessels or lymph
What is the normal color of urine Normal urine color ranges from pale yellow to deep amber — the result of a pigment called urochrome
What is progeria Hutchinson-Gilford progeria syndrome is an extremely rare genetic condition characterized by the dramatic, rapid appearance of aging beginning in childhood, starting in
What is arteriovenous fistula Arteriovenous fistula fistula is an abnormal connection between an artery and a vein. This causes blood to flow directly from the
What is temporal arteritis Temporal arteritis (giant cell arteritis) is where the arteries, particularly those at the side of your head (the temples), become inflamed.
What is acanthosis nigricans Acanthosis nigricans is not a skin condition in itself, but can be a sign of an underlying health problem or disease.
What is a growth plate fracture The bones of children and adults share many of the same risks for injury. But because they are still
What is premature ventricular contractions Premature ventricular contractions are extra heartbeats that is initiated by Purkinje fibers, an ectopic cardiac pacemaker located in the ventricles rather
What is an ectopic heartbeat Ectopic heartbeats are early (premature) or extra heartbeats, which can cause you to have palpitations. ‘Ectopic’ means out of place.