Depends: On what he is referring to? The black could the tarry stool which s associated with blood in the stool. If it is the tissue colored black, still notlikely to be cancer, but definitely not normal. By the way, how did you son see his own rectum?
Answered 4/29/2014
5.5k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question