Fallopian tubes
Benign or nonneoplastic conditions
Ovarian hilar cell heterotopia

Author: Nicole Riddle, M.D. (see Authors page)
Editor: Jamie Shutter, M.D.

Revised: 3 August 2017, last major update April 2013

Copyright: (c) 2002-2017, PathologyOutlines.com, Inc.

PubMed Search: Ovarian hilar cell heterotopia

Cite this page: Ovarian hilar cell heterotopia. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/fallopiantubeshilarcells.html. Accessed December 16th, 2018.
Definition / general
Heterotopic location of ovarian hilus cells within fallopian tube and mesosalpinx (Int J Gynecol Pathol 2011;30:46)
  • Rare, usually identified in association with other underlying pelvic pathology and in patients over 40
  • Present in 0.5% of fallopian tubes or paratubal tissue, usually in fimbriae
Gross description
  • May be incidental or a nodule may be seen
Microscopic (histologic) description
  • Usually a discrete, circumscribed nodule(s) or clusters of hilus cells
  • May have an infiltrative (rather than a nested) growth pattern
Differential diagnosis
  • Can mimic metastatic carcinoma