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.
Urine that is pink, red, brown or rust-colored may indicate a urinary tract problem. However, before getting worried, think back to what you had to eat recently. Foods such as beets, blackberries and rhubarb as well as heavily dyed foods may harmlessly and temporarily turn your pee red or pink.