Meconium histocytosis

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Author: Mikael Häggström [note 1]
Meconium histocytosis of the fetal membranes, usually as part of placenta processing.

Gross processing

Grossly, the amniotic side of the fetal membranes and placental disk is inspected for any greenish discoloration, which indicates the presence of mecinoum.[1]

Gross pathology of meconium-stained placentas.


At least if the presence of meconium is suspected from clinical history and/or the gross exam, look for the following histopathologic signs of it:[2]


It does not need to be reported if not readily seen. Example addition to a placenta report:

Meconium histiocytosis.


  1. For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Patholines:Authorship for details.

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  1. Weida, Jennifer N.; Schubert, Frank P.; Pastrick, Meredith A.; Patil, Avinash S. (2015). "Comprehensive Review of the Stillborn Placenta ". Journal of Midwifery & Women's Health 60 (4): 380–389. doi:10.1111/jmwh.12338. ISSN 15269523. 
  2. Mandolin S. Ziadie. Placenta - Nonneoplastic placental conditions and abnormalities - Noninfectious - Meconium staining. Pathology Outlines. Topic Completed: 1 October 2011. Minor changes: 27 August 2020

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