Written by medicover team and medically reviewed by dr vidyasagar korla. Melena refers to black, tarry stools caused by the digested blood in the gastrointestinal tract. It's often a sign of bleeding in …

This results in dark, black stools with blood that … Melena is a form of blood in stool which refers to the dark black, tarry feces that are commonly associated with upper gastrointestinal bleeding. The black color and characteristic strong odor …