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melena a Hematemesis is the vomiting of blood, which may be obviously red or have an appearance similar to coffee grounds. Melena is the passage of black, tarry stools.. Get all 18+ videos and photos by subscribing to our Telegram channel. Melena occurs if the blood remains in the colon long enough for it to be broken down by colonic bacteria. melena a Discover the finest adult content on our Telegram channel—don’t miss out! Hit "open" and start following our channel. Your ultimate source of hot adult content is just a click away! Melena is the black, tarry stool that's caused by internal bleeding. Black blood in your stool is usually from your upper GI tract.
