A CASE OF ENDOMETRIOSIS WITH A GIANT TUMOR IN THE PELVIC CAVITY DIAGNOSED BY CT-GUIDED BIOPSY

Kazuyoshi Kato, Yoshinori Shirai, Masato Ono, Tatsuo Arai, Shinii TANIYAMA, Masanori Sugito, Munemasa Ryu
In: Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) · 1998 · vol. 59(4) , pp. 1122–1126 · doi:10.3919/jjsa.59.1122 · W2317208168
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⚙ AI-generated summary by claude@2026-06, 2026-06-12 ⓘ

A CT-guided biopsy successfully diagnosed a giant pelvic endometriosis tumor causing intestinal obstruction, highlighting the need to consider endometriosis in large pelvic masses.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-12 · read from full text ⓘ

This paper reports a single case of a 48-year-old woman presenting with intestinal obstruction and severe abdominal distention, initially thought to be a rectal tumor. CT and MR imaging showed a large pelvic cavity mass that filled the rectal lumen causing complete obstruction and extended to the uterus, sacrum, and the left piriformis muscle; endoscopic biopsies could not establish a diagnosis. CT-guided biopsy provided a definitive diagnosis of endometriosis, after which medication for the disease was started, and the authors note the key limitation that conclusions are based on one case. This paper is centrally about endometriosis — it describes endometriosis presenting as a giant pelvic mass causing intestinal obstruction and diagnosed via CT-guided biopsy.

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Abstract

A case of endometriosis with a giant tumor in the pelvic cavity presenting with intestinal obstruction is described. A 48-year-old woman was referred to the hospital after colostomy for intenstinal obstruction at another hospital, where she consulted about severe abdominal distention and was diagnosed as having a rectal tumor causing intestinal obstruction. On admission abdominal CT scans and MR images revealed a large tumor occupying the pelvic cavity. The tumor filled the lumen of the rectum to cause complete obstruction and extended to the uterus, sacrum, and left piriformis muscle. It was unable to make a diagnosis by endoscopic bioposies, but CT-guided biopsy successfully provided the definite diagnosis of endometriosis for us. Medication for the disease was started thereafter. It is suggested that we have to make the diagnosis for large tumors in the pelvic cavity causing intestinal obstruction by entertaining not only malignancies such as rectal or ovarian cancer but also endometriosis as possible different diagnosis. If the definitive diagnosis is unable to be made by endoscopic biopsy, CT-guided biopsy is recommended.
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A CASE OF ENDOMETRIOSIS WITH A GIANT TUMOR IN THE PELVIC CAVITY DIAGNOSED BY CT-GUIDED BIOPSY 1998 Volume 59 Issue 4 Pages 1122-1126 Details Abstract A case of endometriosis with a giant tumor in the pelvic cavity presenting with intestinal obstruction is described. A 48-year-old woman was referred to the hospital after colostomy for intenstinal obstruction at another hospital, where she consulted about severe abdominal distention and was diagnosed as having a rectal tumor causing intestinal obstruction. On admission abdominal CT scans and MR images revealed a large tumor occupying the pelvic cavity. The tumor filled the lumen of the rectum to cause complete obstruction and extended to the uterus, sacrum, and left piriformis muscle. It was unable to make a diagnosis by endoscopic bioposies, but CT-guided biopsy successfully provided the definite diagnosis of endometriosis for us. Medication for the disease was started thereafter. It is suggested that we have to make the diagnosis for large tumors in the pelvic cavity causing intestinal obstruction by entertaining not only malignancies such as rectal or ovarian cancer but also endometriosis as possible different diagnosis. If the definitive diagnosis is unable to be made by endoscopic biopsy, CT-guided biopsy is recommended. A 48-year-old woman was referred to the hospital after colostomy for intenstinal obstruction at another hospital, where she consulted about severe abdominal distention and was diagnosed as having a rectal tumor causing intestinal obstruction. On admission abdominal CT scans and MR images revealed a large tumor occupying the pelvic cavity. The tumor filled the lumen of the rectum to cause complete obstruction and extended to the uterus, sacrum, and left piriformis muscle. It was unable to make a diagnosis by endoscopic bioposies, but CT-guided biopsy successfully provided the definite diagnosis of endometriosis for us. Medication for the disease was started thereafter. It is suggested that we have to make the diagnosis for large tumors in the pelvic cavity causing intestinal obstruction by entertaining not only malignancies such as rectal or ovarian cancer but also endometriosis as possible different diagnosis. If the definitive diagnosis is unable to be made by endoscopic biopsy, CT-guided biopsy is recommended. © Japan Surgical Association Favorites & Alerts Recently viewed articles

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endometriosis

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