Pseudomelanosis duodeni in a postrenal transplant patient

Theresa Schuerle, Elie Aoun, Kofi Clarke

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Pseudomelanosis duodeni is a rare entity characterised by dark pigmented intracellular granules seen within macrophages that lie within the lamina propria of the duodenal villi. There is no known treatment, and the clinical signi ficance and long-term sequelae of this entity are unclear. We present a case of pseudomelanosis duodeni in a 54-year-old woman who presented with a 1-month history of nausea, vomiting and non-bloody diarrhoea. The medical history was signi ficant for diabetes mellitus type 2, end-stage renal disease status postkidney transplant, hypertension, anaemia of chronic disease and hypothyroidism. A gastroduodenal endoscopy revealed pigmented dark lesions in the duodenal mucosa. Biopsies from the second part of the duodenum and duodenal bulb showed pigmented macrophages in the lamina propria. The findings were consistent with duodenal melanosis. In spite of renal transplant with normalisation of renal function, the duodenal melanosis persists, which raises questions on the role of renal impairment in this entity.

Original languageEnglish (US)
JournalBMJ case reports
StatePublished - Dec 10 2013

All Science Journal Classification (ASJC) codes

  • General Medicine


Dive into the research topics of 'Pseudomelanosis duodeni in a postrenal transplant patient'. Together they form a unique fingerprint.

Cite this