Primary malignant mesothelioma of the greater omentum: report of a case.
We report a rare case of primary malignant mesothelioma of the greater omentum. To our knowledge, only one other such case has been described in the English literature. The patient was a 61-year-old Taiwanese woman without any history of exposure to asbestos, who presented with lower back pain. Abdominal sonography and computed tomography showed a 12 x 9 x 9-cm(3) mass occupying the lower abdomen. Laparotomy revealed a tumor in the greater omentum, invading the posterior wall of the uterus, without diffuse mesenteric thickening or multiple small nodules in the peritoneum. We performed en bloc resection of the mass, which involved omentectomy, hysterectomy, and bilateral salpingo-oophorectomy. Microscopically, the tumor cells were arranged in a tubulopapillary pattern lined by a single layer of uniform, cuboidal cells. A pattern of sclerotic stroma with irregular glandular elements was also recognized. Immunohistochemically, the tumor cells showed strong positivity for calretinin. The final pathologic diagnosis was malignant mesothelioma. The patient did not receive chemotherapy or radiotherapy, and has remained in good health without any evidence of recurrence for almost 3 years since her operation.
Liu
Yao-Chi
YC
Division of General Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, No. 325 Sec 2 Cheng-Kung Road, Neihu 114, Taipei, Taiwan.
Kuo
Yen-Liang
YL
Yu
Cheng-Ping
CP
Wu
Hurng-Sheng
HS
Yu
Jyh-Cherng
JC
Chen
Cheng-Jueng
CJ
Chan
De-Chuan
DC
Yu
Chih-Yung
CY
Hsieh
Chung-Bao
CB
Chen
Teng-Wei
TW
D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007813:Laparotomy; D008654:Mesothelioma / Q000473:pathology* / Q000601:surgery*; D008875:Middle Aged; D009852:Omentum / Q000473:pathology* / Q000601:surgery*; D010534:Peritoneal Neoplasms / Q000473:pathology* / Q000601:surgery*; D014057:Tomography, X-Ray Computed