teratoma. [terâ²ÉtÅâ²mÉ] pl. teratomas, teratomata. a tumor composed of different kinds of tissue, none of which normally occurs together or at the site of the tumor. Teratomas are most common in the ovaries or testes.
The pink-colored film or ring frequently seen on showers, tubs, toilets and pet water bowls is typically caused by growth of the airborne bacteria Serratia marcesens. This harmless nuisance organism reacts with standing water and frequently forms during spring and summer months.
Yeast live in the vagina all the time in small, harmless numbers. But when these fungi grow out of control, the resulting itchiness, burning, and redness are extremely uncomfortable. In some cases, a thick, white, odorless discharge, resembling cottage cheese, also appears. Lactobacillus bacteria (a healthy type) normally keep the vagina's pH and yeast levels in check. But the balance can be tipped by antibiotics, corticosteroids, uncontrolled diabetes, or raised estrogen levels from birth control or pregnancy.