Topic Completed: 1 June 2013

Minor changes: 31 August 2020

Copyright: 2003-2020,, Inc.

PubMed Search: Fontana-Masson

Lauren N. Stuart, M.D., M.B.A.
Page views in 2019: 4,216
Page views in 2020 to date: 2,937
Cite this page: Stuart L. Fontana-Masson. website. Accessed September 20th, 2020.
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
Image 01 Image 02