Category: S

Magnesium ammonium phosphate crystals, important in health care because they cause about 15% of all kidney stones. They are formed in the urinary tract in conjunction with some bacterial infections, such as infection with Proteus mirabilis, and in some patients with hypercalciuria.  

Dorsiflexion of the foot when the thigh is flexed on the abdomen. This sign may be associated with spastic paralysis of the leg.  

A form of chronic thyroiditis in which the gland becomes enlarged, hard, and adherent to adjacent tissues. The follicles become atrophic and fibrosis occurs.  

A form of ovarian teratoma in which the mass is composed of typical thyroid follicles filled with colloid.  

A rare condition involving a diffuse and extensive infiltration of the entire thyroid gland.  

Distortion of the head and face resulting from a developmental anomaly.  

A genus of plants yielding a poisonous, white, crystalline glucoside, previously used as a heart stimulant.  

A genus of nematodes; the several species usually parasitize horses.  

Infestation with organisms of the genus Strongyloides.  

A roundworm that causes gastrointestinal infections (primarily in persons from developing nations) and opportunistic infections (in immunosuppressed patients). It may occasionally be life-threatening. In the U.S., S. stercoralis is found mainly in the rural South. The ova hatch in the intestines of the host, and rod-shaped larvae are passed in the stool. In the soil,…