RESUMO
Laparoscopic cholecystectomy (LC) is considered as the gold standard operation for the removal of a nonmalignant, diseased gallbladder. With the increasing number of LCs, a number of gallbladder carcinomas have been unexpectedly found either during or following this procedure. The removal of unexpected gallbladder carcinomas by LC can cause also a new complication, port site metastasis (PSM), which is developed by the implantation of tumor cells into the abdominal wall at the port site. We report a rare case of PSM of gallbladder carcinoma which was unsuspected at the time of LC. A 65-year-old man underwent LC at another hospital for calculous cholecystitis. The histologic examination revealed an adenocarcinoma of the gallbladder infiltrating the muscle wall. Despite the surgeon's advice, the patient refused any additional treatment. Ten months after surgery, he visited our hospital because of a painful and palpable subcutaneous mass at the scar of the periumbilical trocar incision. The mass was biopsed and histological examination confirmed metastasis from the gallbladder carcinoma.