Abstract
We report a case of malignant peritoneal mesothelioma that formed a huge tumor in the abdomen. A 78-year-old woman was admitted to our hospital because of an abdominal tumor and pyrexia. The tumor was palpable in the right lower abdomen. The tumor was contrasted at the margin and the tumor was measured as 12.5 cm × 6.6 cm using contrasted computed tomography (CT). Contrast enema showed that the tumor did not invade the intestine. Angiography showed that the tumor did not exhibit hypervascularity. The prospective diagnosis was that this was a tumor of the mesentery based on the findings of CT, contrast enema, and angiography. After laparotomy, the extracted abdominal tumor was diagnosed as a malignant peritoneal mesothelioma by pathologic analysis. The diagnosis of this disease is difficult without laparotomy or laparoscopy. This disease generally has a poor prognosis and requires strict follow-up.
