[Port site recurrence after thoracoscopic resection of the pulmonary metastasis of sigmoid colon cancer].

A 71-year-old female underwent thoracoscopic resection for pulmonary metastasis from sigmoid colon cancer in March 2012. After 7 months, postoperative computed tomography (CT) showed a chest tumor around the left 6th rib. At the same time, she complained of left chest pain. These findings were initially considered as posttreatment changes. But the lesion of the chest wall enlarged and the pain worsened. We made a diagnosis of chest wall recurrence and performed a surgery in June 2013. The pathological diagnosis was chest wall metastasis from colon cancer. A port site recurrence on the chest wall was strongly suggested because it was extremely close to the port site of thoracoscopic resection. This patient is free from recurrence 16 months after surgery.