Desmoid tumor requiring differentiation from port-site relapse after surgery for lung cancer.

Summary

Thoracoscopic left lower lobectomy with lymph node dissection for lung cancer was performed in a 76-year-old man. Sixteen months after surgery, CT revealed a pleural tumor measuring 38 mm at the surgical port wound. Thoracoscopic tumorectomy was conducted. The pathological diagnosis was desmoid tumor. As the margins of the resected specimen were positive, radiotherapy was performed. During the 16-month follow-up period, there has been no relapse. Pleural desmoid tumors must be differentiated from port-site relapse.