A case of small intestinal endometrioid adenocarcinomaReport as inadecuate

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Surgical Case Reports

, 2:97

First Online: 14 September 2016Received: 17 May 2016Accepted: 08 September 2016


Endometriosis generally occurs in the ovary. Intestinal endometriosis is rare. About 1 % of all endometriosis cases become malignant. Malignant transformation of small intestinal endometriosis is very rare. A 55-year-old woman who underwent total abdominal hysterectomy and bilateral salpingo-oophorectomy and omentectomy for endometriosis 7 years ago presented to her primary care doctor with melena. A tumor was detected in the right lower abdomen by ultrasonography. The doctor referred her to our hospital. Computed tomography demonstrated a lobulated tumor ventral to the right common iliac vessels. Magnetic resonance imaging demonstrated that the tumor had heterogeneous intensity on T2-weighted images. Several small cysts with high intensity were observed caudal to the tumor on T2-weighted images. We performed partial small intestinal resection for the lesion. The tumor was diagnosed as endometrioid adenocarcinoma of the small intestine. She has been relapse-free for 5 years after surgery. Only three cases of malignant transformation of small intestinal endometriosis have been reported previously. It is very rare for long-term survival to be obtained with surgery alone, as in our case. This case report highlights the imaging findings for malignant transformation of intestinal endometriosis.

KeywordsEndometriosis Malignant transformation Small intestine Magnetic resonance imaging AbbreviationsBSObilateral salpingo-oophorectomy

MRmagnetic resonance

TAHtotal abdominal hysterectomy

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Author: Yusuke Ogi - Tomohiro Yamaguchi - Yusuke Kinugasa - Akio Shiomi - Hiroyasu Kagawa - Yushi Yamakawa - Masakatsu Numata - Aki

Source: https://link.springer.com/article/10.1186/s40792-016-0226-6

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