Fallopian tubes
Benign or nonneoplastic conditions
Mesonephric duct remnants

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

Revised: 11 August 2017, last major update Month May 2013

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

PubMed Search: "Mesonephric duct remnants"

Cite this page: Mesonephric duct remnants. PathologyOutlines.com website. http://pathologyoutlines.com/topic/fallopiantubesmesonephric.html. Accessed October 22nd, 2017.
Definition / general
  • Mesonephric duct is paired organ present during embryogenesis connecting primitive kidney to cloaca, which becomes part of male reproductive organs (Wikipedia: Mesonephric Duct)
  • In women, duct regresses but normal remnants remain (see below); however, "abnormal" ductular remnants may remain and cause confusion as they appear as glands "out of place"
Terminology
  • Also known as Wolffian duct, archinephric duct, Leydig duct, nephric duct
Epidemiology
  • Embryological remnant which occurs in all women of any age
  • No known predisposing factors
Sites
  • Anywhere in pelvic cavity, including broad ligament, cervix (20% of women), fallopian tube, lymph nodes, ovary
Etiology
  • In early development, mesonephric and paramesonephric ducts coexist
  • Mesonephric ducts develops in bladder trigone in both sexes
  • In men, under influence of testosterone, mesonephric duct develops into epididymis, vas deferens, seminal vesicle
  • In women, absence of testosterone causes duct regression; this may be incomplete and inclusions / remnants may persist
  • Gartners ducts are paired remnants that may give rise to cysts and are typically located lateral to vaginal wall in broad ligament
  • Epoophoron (also known as organ of Rosenmüller or parovarium) is analogous to male epididymis; most cranial portion of remnant, located in lateral broad ligament, between ovary and fallopian tube; may communicate with Gartner ducts
  • Paraoophoron is analogous to male paradidymis, usually located in medial broad ligament
Treatment
  • None needed
Gross description
  • Usually no significant gross findings, incidental on microscopy, unless cyst formation
Microscopic (histologic) description
  • Small tubules lined by low columnar to cuboidal cells without cilia; surrounded by prominent smooth muscle; may be cystic
Microscopic (histologic) images

Images hosted on other servers:

Small glands or tubules

Cuboidal or columnar epithelium

Mesonephric duct hyperplasia, lobular type

Positive stains
Negative stains
Differential diagnosis