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.
Red blood cells (RBCs) in the urine (called hematuria) can be hard to ignore when they turn your toilet bowl pink, bright red, or the color of cola. Intermittent spots of blood in the water may be also be seen. This overt form of blood in the urine is called gross or frank hematuria.