Isolated appendiceal endometriosis resulting in intussusception

article OA: gold CC0 ⤵ 6 in-corpus citations

Abstract

An inverted (intussuscepted) appendix is a rare finding, often mistaken for a polyp as it presents with vague symptoms. This can result in misdiagnosis and inappropriate management. Diagnosis is usually made through surgery. Rarely, endometriosis has been found as the cause of the intussusception. A 42-year-old woman presented with frequent loose stools over 2 years, an elevated calprotectin over 400 μg/g faeces (normal <110) and a serum C-reactive protein of 40 mg/l (normal <5 mg/l). Endoscopy showed an inverted appendix. Histopathology results showed inflammation and ulceration. Laparoscopic appendicectomy was performed successfully, and endometriosis was found on the inverted appendix. This is the first case reported of an inverted appendix containing endometriosis, in which the intussusception of the appendix has been diagnosed on endoscopy. This case highlights how endometriosis can involve just the appendix, without any involvement of reproductive organs. We suggest considering inverted appendix as a differential diagnosis when investigating caecal lesions.

My notes (saved in your browser only)

Condition tags

endometriosis

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

References (10)

Cited by (6)

Source provenance

europepmc
last seen: 2026-06-04T01:30:01.192114+00:00
openalex
last seen: 2026-06-04T00:00:01.174412+00:00
pubmed
last seen: 2026-05-13T22:19:31.300640+00:00
License: CC0 · commercial use OK