Renal papillary necrosisis a form of nephropathy involving the necrosis of the renal papilla. Lesions that characterize renal papillary necrosis come from an impairment of the blood supply, and from...

Hyperthecosis is hyperplasia of the theca interna of the ovary. It is when an area of luteinization occurs along with stromal hyperplasia. The luteinized cells produce androgens, which may lead...

The RAAS system (aka renin-angiotensin-aldosterone system), is a hormone system that regulates water balance, and thus blood pressure. Physiology When blood volume (and thus pressure) is low, juxtaglomerular cells [in the kidneys] secrete...

Plum-red discoloration of the cheeks, associated with mitral stenosis, due to CO2 retention and its vasodilatory effects. [img]malar-flush.jpg[/img] Source: MyHealthyFeeling

Fetal position is the orientation of the fetus in the womb, identified by the location of the presentating part (i.e. anatomical part closest to the pelvic inlet of the birth...

Developmental delay (aka delayed milestone) is where a child doesn't reach 1 of the milestone stages at the expected age, which can be in one of the 4 developmental domains: However, a wide...

Chilblains (aka pernio, perniosis) is where a predisposed individual is exposed to cold and humidity, causing tissue damage. It is often confused with frostbite and trench foot. Damage to capillary...

Beta2-adrenergic agonists are drugs that act on the beta2-adrenergic receptor. [faq]What are beta agonists? It's a drug that acts on a receptor, that is usually activated by adrenaline. It does things like...

Hysterectomy (from Greek "hysteria" meaning "uterus", and "otomy" meaning "cutting") is the surgical removal of the uterus. It can also involve removal of the cervix, ovaries, fallopian tubes, and other surrounding...

Major depressive episode is a period involving Sx of major depressive disorder, primarily severely depressed mood, and a loss of interest or pleasure in everyday activities, accompanied by other Sx...