Benign tumors

Author: Elliot Weisenberg, M.D. (see Authors page)

Revised: 18 January 2018, last major update January 2013

Copyright: (c) 2003-2018,, Inc.

PubMed Search: Melanocytosis esophagus

Cite this page: Weisenberg, E. Melanocytosis. website. Accessed November 17th, 2018.
Definition / general
Gross description
  • No abnormalities
Microscopic (histologic) description
  • Melanocytic proliferation in basal layer of esophageal squamous epithelium with increased quantity of melanin; overlying epithelium may demonstrate hyperplasia, acanthosis or hyperkeratosis; variable inflammation, melanophages, fibrosis and telangiectasia; no atypia
Microscopic (histologic) images

Images hosted on other servers:



Melanoma: lentiginous and pagetoid spread

Positive stains
Negative stains
Electron microscopy description
Differential diagnosis