Metastatic chest wall tumor after resection of primary rectal cancer: A case report

A 66-year-old man with rectal cancer had undergone low anterior resection followed by chemotherapy using TS-1. He was referred to our hospital because of an elevated serum CEA level, and two nodules in the upper lobe of left lung and a mass shadow in the left parietal pleura on chest computed tomography. Under a radiological diagnosis of metastasis from the previous rectal cancer, we performed a partial resection of the left upper lobe and resection of the chest wall tumor. Histologically, all tumors were confirmed as metastases from rectal cancer. He has been receiving chemotherapy using oxaliplatin with TS-1. Now, at one year after the resection, he shows no signs or symptoms of recurrence. Because few cases of metastatic chest wall tumor from rectal cancer have been reported, we report the case, considering that the accumulation of similar cases is necessary for the establishment of surgical indications.