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melanosis coli

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melanosis /mel·a·no·sis/ (mel″ah-no´sis) melanism; disordered production of melanin, with darkening of the skin.
melanosis co´li  black or dark brown discoloration of the mucosa of the colon, due to the presence of pigment-laden (not true melanin) macrophages within the lamina propria.
neurocutaneous melanosis  giant hairy nevus accompanied by malignant melanomas of the meninges.

melanosis co·li (kl)
n.
Melanosis of the mucosa of the large intestine, due to accumulation of pigment within macrophages in the lamina propria mucosae.

melanosis coli
[mel′ənō′sis]
an abnormal condition in which the mucous membrane of the colon is pigmented with melanin.

melanosis
1. a condition characterized by dark pigmentary deposits.
2. a disorder of pigment metabolism.

melanosis coli
brown-black discoloration of the mucosa of the colon.
congenital melanosis
patches of melanin in the capsule and stroma of the liver or lung in the neonate.
liver melanosis
see hepatic lipofuscinosis.

melanosis coli
Brown bowel syndrome A benign condition characterized by segmental or global darkening of the colonic mucosa coupled with chronic constipation, due to prolonged abuse of cascara/sagrada-type laxatives Clinical Abdominal pain, pancreatitis, biliary atresia, cirrhosis, peptic ulcer disease, mucoviscidosis. See Laxative.


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