A Case of a Solitary Metastatic Mesenteric Tumor from Lung Cancer

Abstract

The metastatic mesenteric tumor from lung cancer is extremely rare. We report a case of resected solitary mesenteric metastasis 2 years after operation for lung cancer. A 57-year-old man had undergone right upper lobectomy for infectious giant bulla. Adenocarcinoma was histopathologically proved in the resected giant bulla. Beginning at 18 months after the lung resection, the serum carcinoembryonic antigen (CEA) level gradually increased. An abdominal computed tomography (CT) scan showed a tumor in the mesentery of the small intestine and 2-fluoro-2-deoxyglucose (FDG)-CT demonstrated high accumulation of FDG in the tumor. The tumor gradually enlarged in size for 6 months. We diagnosed the tumor as a solitary metastatic or primary mesenteric tumor. Laparoscopic-assisted resection of the small intestine including the mesentery where the tumor existed was performed. The pathological diagnosis was metastatic adenocarcinoma from lung cancer. Serum CEA level decreased after the operation. Although solitary mesenteric metastasis of lung cancer is rare, it mimics other mesenteric primary tumors. In order to address the diagnosis of metastasis from lung cancer, resection of solitary mesenteric metastasis from lung cancer should be considered, allowing for a proper general chemotherapy.