![A mixture of normal stool and melaena (black section of stool in the... | Download Scientific Diagram A mixture of normal stool and melaena (black section of stool in the... | Download Scientific Diagram](https://www.researchgate.net/publication/282610493/figure/fig3/AS:486315474067471@1492958052814/A-mixture-of-normal-stool-and-melaena-black-section-of-stool-in-the-middle-of-the-image.png)
A mixture of normal stool and melaena (black section of stool in the... | 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
![Hematemesis, Hematochezia, and Melena - Differential Diagnosis, Examination and Investigations - Manual of Medicine Hematemesis, Hematochezia, and Melena - Differential Diagnosis, Examination and Investigations - Manual of Medicine](https://manualofmedicine.com/wp-content/uploads/2021/10/Causes-of-upper-gastrointestinal-Bleeding.png)