GASTROINTESTINAL HEMORRHAGE (2): Melena. Melena, the passage of black, tarry stools, usually implies blood loss greater than 500 ml originating anywhere between the oropharynx and the right hemicolon. Melena occurs most often, Melanocytic nevi and melanoma: unraveling a complex relationship Oncogene Our Extra Special Skin: What is Melanin & Who Has It? PROUDLY Enhancing melanoma detection through multiple datasets integration and robust deep learning Cluster Computing Springer Nature Link From melanocytes to melanomas Nature Reviews Cancer Having melena in stool makes it Melenic Stool NOT Melanotic stool MELENIC MELANOTIC #MedTwitter #IMbound #EMbound #MedEd #GITwitter