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.
Just keep this in mind: Noticing blood on your toilet paper or in the toilet after you go could be caused by a variety of different thingsâand heading directly to a medical professional is always the best way to find out what's what. That being said, Sonpal says some causes are more likely (and less scary) than others for blood in stool. The color of the blood can give you a clue as to where the underlying issue might be. Darker, almost blackish blood typically comes from the upper GI tract (your stomach or esophagus), which could mean you have an ulcer.