Mallory-Weiss syndrome causes about 5% of all upper gastrointestinal bleeding.

Gastrointestinal bleeding can be caused by bleeding in the any part of the upper and lower GI tracts. It can also be caused by hemorrhoids, colon or stomach cancer, and gastric ulcers.

It means there is bleeding in upper gastrointestinal tract such as bleeding from dudenal ulcer. Medical Terminology for Black stools is malena.

Gregg Diamond died on March 14, 1999, in USA of upper gastrointestinal bleeding.

Octreotide Acetate (Sandostatin) are the drugs of choice for gastrointestinal bleeding.