Endoscopic ultrasound-guided fine needle aspiration for the diagnosis of bowel endometriosis: a case report

Takao Miwa, Takuji Iwashita, Iwashita T, Aiba M, Masashi Aiba, Takahiro Kochi, Kochi T, Toda K, Katsuhisa Toda, Noriaki Nakamura, Nakamura N, Naoki Katsumura, Katsumura N, Shimizu M, Masahito Shimizu
Medical ultrasonography · 2019 · vol. 22(2) , pp. 243 · doi:10.11152/mu-2000 · PMID:32190855 · W2964530924
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⚙ AI-generated summary by claude@2026-06, 2026-06-07 ⓘ

Endoscopic ultrasound-guided fine needle aspiration was used to diagnose bowel endometriosis in a patient with obstructive symptoms, demonstrating its utility in distinguishing this condition from malignancy.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 · read from full text ⓘ

This case report describes a 42-year-old woman with stool habit changes, nausea, stomach aches, and complete rectal obstruction, in whom endoscopic ultrasound showed a low-echo lesion outside the rectal mucosa. Endoscopic ultrasound-guided fine needle aspiration was performed and the findings confirmed bowel endometriosis. The authors emphasize that bowel endometriosis has nonspecific clinical characteristics and is frequently misdiagnosed as malignant tumor or other colorectal disorders, and the paper’s limitation is that it provides evidence from a single patient case. This paper is centrally about endometriosis — specifically, it reports EUS-guided fine needle aspiration for diagnosing bowel endometriosis causing rectal obstruction.

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Abstract

Bowel endometriosis is a condition caused by endometrial glands and stroma infiltrating the bowel wall and reaching the subserous fat tissue or the adjacent subserous plexus. A 42-year-old woman with changes in stool habits, nausea, and stomach aches experienced complete obstruction in the rectum. Endoscopic ultrasound demonstrated a low echoic lesion outside the rectal mucosa and endoscopic ultrasound-guided fine needle aspiration confirmed the diagnosis of bowel endometriosis. The clinical characteristics of bowel endometriosis are unspecific and this condition is sometimes misdiagnosed as a malignant tumor, irritable bowel syndrome, or any other colorectal disorder. Our aim is to show that endoscopic ultrasound-guided fine needle aspiration might be helpful for bowel endometriosis diagnosis and exclusion of other malignant disease.
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Abstract

Bowel endometriosis is a condition caused by endometrial glands and stroma infiltrating the bowel wall and reaching the subserous fat tissue or the adjacent subserous plexus. A 42-year-old woman with changes in stool habits, nausea, and stomach aches experienced complete obstruction in the rectum. Endoscopic ultrasound demonstrated a low echoic lesion outside the rectal mucosa and endoscopic ultrasound-guided fine needle aspiration confirmed the diagnosis of bowel endometriosis. The clinical characteristics of bowel endometriosis are unspecific and this condition is sometimes misdiagnosed as a malignant tumor, irritable bowel syndrome, or any other colorectal disorder. Our aim is to show that endoscopic ultrasound-guided fine needle aspiration might be helpful for bowel endometriosis diagnosis and exclusion of other malignant disease.

Keywords

bowel endometriosis; bowel obstruction; endoscopic ultrasound-guided fine needle aspiration; ileus DOI: http://dx.doi.org/10.11152/mu-2000

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Condition tags

endometriosisbowel_endometriosisirritable_bowel_syndrome

MeSH descriptors

Endometriosis Endometriosis Endoscopic Ultrasound-Guided Fine Needle Aspiration Intestinal Diseases Intestinal Diseases Adult Endometriosis Endoscopic Ultrasound-Guided Fine Needle Aspiration Female Humans Intestinal Diseases Intestines Intestines

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