Mature Teratoma of the Mesentery with High Serum Carcino-Embryonic Antigen and Carbohydrate Antigen 19-9: A Case Report

Tomoi Sato, Takeshi Mishina, Satoshi Suzuki, Masahiro Ohtaki*, Tomonori Miyazawa, Kaoru Sakamoto, Masato Nakano, Masayuki Fukase**, Yo-ichi Matsubara and Katsuyoshi Hatakeyama***

Department of Surgery, Department of Pediatric Surgery* and Department of Pathology**, Tsuruoka Municipal Shonai Hospital
Division of Digestive and General Surgery, Niigata University Graduate Schoolof Medical and Dental Sciences***

Extragonadal teratoma originating from the mesentery is extremely rare. A 45-year-old man was found in computed tomography and ultrasonography to have a round, well-encapsulated cystic mass with partial calcification in the right abdomen. Serum CEA was 138 ng/ml and serum CA19-9 53 U/ml, suggesting potential malignancy. At laparotomy, the 9×5 cm tumor was located in the mesentery of the ileocecal region. Because it was well encapsulated, we excised the tumor without bowel resection. The histopathological diagnosis of benign mature mesenteric teratoma was made postoperatively. Serum CEA and CA19-9 normalized within 2 months of surgery. This is, to our knowledge, the first reported case of mesenteric teratoma with high serum CEA and CA19-9. To diagnose mesenteric tumors, benign mesenteric teratoma should be considered. Because tumor resection is appropriate surgical management for mesenteric teratoma, bowel resection should be avoided to minimize surgical stress.

Key words
teratoma, mesentery, CEA

Reprint requests
Tomoi Sato Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences
1-757 Asahimachi, Niigata, 951-8510 JAPAN

Accepted
December 17, 2004

To read the PDF file you will need Abobe Reader installed on your computer.