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“xysma”
Shredded, sloughed intestinal mucosal tissue in the stool or defecation (excretory product evacuated from the bowels): Dr. Wilson sent samples of Hector's xysma, the membranous shreds that were found in the feces of his diarrhea, to the medical laboratory for analysis.
"Sloughed" refers to a layer or mass of dead tissue separated from surrounding living tissue, as in a wound, a sore, or an inflammation.