Fallopian tubes
Infections / infestations

Topic Completed: 1 April 2013

Revised: 23 August 2019

Revised: 18 December 2018

Copyright: (c) 2002-2018, PathologyOutlines.com, Inc.

PubMed Search: "Fallopian tubes", Enterobius

Nicole Riddle, M.D.
Page views in 2018: 276
Page views in 2019 to date: 214
Cite this page: Riddle N. Enterobius. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/fallopiantubesenterobius.html. Accessed October 14th, 2019.
Definition / general
  • Common intestinal parasite, rarely reported in fallopian tube, usually in areas with high prevalence
  • Also known as pinworm in US (in UK pinworm is Strongyloides), threadworm in UK, seat worm
Clinical features
May present as PID (Arch Dis Child 2002;86:439), abdominal / pelvic pain, infertility
Case reports
30 year old woman with infertility and Enterobius infection (Pathol Res Pract 2010;206:405)
Gross description
  • No specific gross findings
  • May see adult forms grossly, like a grain of rice
Microscopic (histologic) description
  • Adult female has sharply pointed posterior end, 8 - 13 mm long by 0.5 mm wide; adult male has curved posterior end, 2 - 5 mm long by 0.2 mm wide
  • Eggs are translucent, have a thick shell that is flattened on one side, 50 - 60 micrometers by 20 - 30 micrometers
  • Larvae grow to 140 - 150 micrometers long
Microscopic (histologic) images

AFIP images

Enterobius in fallopian tube lumen
(contributed by Col. Dr. Shahid Jamal,
Army Medical College, Rawalpindi, Pakistan)

Images hosted on other servers

Hard shelled egg of E vermicularis

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