What term describes black, tarry stool?

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Multiple Choice

What term describes black, tarry stool?

Explanation:
Melena describes black, tarry stools caused by digestion of blood in the GI tract, usually from an upper GI source such as the stomach or duodenum. The dark color and tarry, sticky consistency come from the chemical breakdown of blood as it passes through the gut, producing compounds that stain the stool black. This is different from hematochezia, which is fresh, bright red or maroon blood in the stool and tends to indicate a lower GI bleed or very rapid transit. Other terms like melanosis refer to pigment changes elsewhere (not the stool’s appearance from digested blood), and steatorrhea describes fatty, bulky, foul-smelling stools from fat malabsorption.

Melena describes black, tarry stools caused by digestion of blood in the GI tract, usually from an upper GI source such as the stomach or duodenum. The dark color and tarry, sticky consistency come from the chemical breakdown of blood as it passes through the gut, producing compounds that stain the stool black. This is different from hematochezia, which is fresh, bright red or maroon blood in the stool and tends to indicate a lower GI bleed or very rapid transit. Other terms like melanosis refer to pigment changes elsewhere (not the stool’s appearance from digested blood), and steatorrhea describes fatty, bulky, foul-smelling stools from fat malabsorption.

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