Abdominal Cancer Day - Bright red blood usually means bleeding that's low in your colon or rectum. Dark red or maroon blood can mean that you have bleeding higher in the colon
Meconium - Wikipedia
Melena
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Melena caused by Gastric Ulceration - Atlas of swine pathology - pig333, pig to pork community
A mixture of normal stool and melaena (black section of stool in the... | Download Scientific Diagram
A 7-year-old boy had tarry stool for days. Panendoscopy showed multiple... | Download Scientific Diagram
Dr. Narula Gastroenterology - In medicine, melena refers to the black "tarry" stool that are associated with upper gastrointestinal bleeding. The black color is caused by the hemoglobin in the blood being