A case of benign mesenteric cystic teratoma

• Published in: Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) Vol. 70; no. 1; pp. 224 - 227
• Main Authors: HASHIGUCHI, Kazuyoshi, KOHYA, Naohiko, MATSUYAMA, Satoru, NAKAFUSA, Yuji, SATO, Toshimi, MIYAZAKI, Kohji
• Format: Journal Article
• Language: Japanese
• Published: Japan Surgical Association 2009
• ISSN: 1345-2843; 1882-5133
• DOI: 10.3919/jjsa.70.224

A 34-year-old woman felt lumbago in October, 2004. A retroperitoneal-mass was pointed out in US study. Abdominal CT scan showed a 27×26mm cystic mass with fat density in abdominal side of the aortic bifurcation. Abdominal angiography showed an avascular mass. Abdominal MRI revealed a 34×28mm demarcated tumor in the mesenterium. This tumor has a surrounding cupsule, which was filled with fat componenent containing high signal of both T1 and T2 in MRI. It was diagnosed as a mesentric teratoma in the pre-operative image. Laparotomic excision of the tumor was performad. Pathological Diagnosis was benign mesenteric cystic teratoma. Teratoma occurs from the digestive tract including the mesentery is very rare. Preoperative differential diagnosis between benign and malignant is very difficult. Total-excision of the tumor produces good prognosis. Surgical exision should be the first treatment option for the mesenteric teratoma.