Topic Completed: 1 June 2013

Revised: 5 March 2019

Copyright: 2003-2015,, Inc.

PubMed Search: Fontana-Masson

Lauren N. Stuart, M.D., M.B.A.
Page views in 2018: 3,308
Page views in 2019 to date: 3,635
Cite this page: Stuart L. Fontana-Masson. website. Accessed November 11th, 2019.
Definition / general
  • Melanin stain
  • Interpretation: melanin granules reduce ammonia-silver nitrate and turn black, but difficult to interpret faint staining in sparsely positive cells
Microscopic (histologic) images

Images hosted on other servers:


Melanotic neuroectodermal tumor of infancy

Positive staining - normal
Positive staining - disease
Back to top