A Rare Case of Duodenal Pseudomelanosis

Abstract

A black-spotted duodenal mucosa was observed during endoscopy of a man with several comorbidities including hypertension and end-stage kidney disease. Histopathological examination revealed pigment-laden macrophages in the lamina propria of the duodenal villi, which was consistent with duodenal pseudomelanosis.

Unusual endoscopic findings by capsule endoscopy: Duodenal and jejunal pseudomelanosis in patients with intake AT2 antagonists

“…The Three patients had Telmisartan Intake.The capsule endoscopy showed multiple diminutive black spots throughout the duodenum and jejunum. Histology showed multiple foci of a brown-black granular pigment inside macrophages within the tips of the villi 1 2 3 .…”