Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 1988 Apr;10(2):150-4.
doi: 10.1097/00004836-198804000-00009.

Pseudomelanosis of the duodenum. Endoscopic, histologic, and ultrastructural study of a case

G Castellano  1 , F Canga, I Lopez, F Colina, J Gutierrez, R Costa, J A Solis-Herruzo
Affiliations
Review

Pseudomelanosis of the duodenum. Endoscopic, histologic, and ultrastructural study of a case

G Castellano et al. J Clin Gastroenterol. 1988 Apr.

Abstract

We present the endoscopic, microscopic, and histochemical studies of a patient with pseudomelanosis of the duodenum. The pigment was located mainly in the lysosomes of macrophages in the lamina propria and was heterogeneous, showing features of melanin, pseudomelanin, and hemosiderin. The origin of this pigment remains unknown, but antihypertensive medication may have played a role.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

Substances

LinkOut - more resources