双语教学

Explain of Gastrointestinal Pathology

117.Melanosis coli, microscopic

The appearance of brown pigment-containing macrophages in the colonic mucosa occurs with a condition called melanosis coli. (This condition has nothing to do with melanomas). Grossly, this produces a brown to black discoloration of the mucosa. Chronic use of laxatives, particularly those containing cascara, senna, and aloe is one factor that may promote the appearance of melanosis coli.

（本图片资料来源自美国犹他大学）