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The authors present two cases of unsuspected carcinoma of the gallbladder after laparoscopic cholecystectomy in which trocar site metastasis developed during their follow-up. In the first case, a 68 year-old woman with cholecystolithiasis underwent an uneventful laparoscopic cholecystectomy. Histologic examination revealed adenocarcinoma invading the mucosa and muscular layers of the gallbladder. The patient refused additional treatment. Seven months later, metastasis developed in the umbilical port site, which was excised. In the second case, laparoscopic cholecystectomy was performed for a symptomatic gallstone in a 78 year-old man. The gallbladder inspection showed thickenning of the infundibulum wall. Histological examination revealed adenocarcinoma invading serosa. No additional treatment was performed because of the patient's advanced age. A metastasis was identified in the 5 mm port site nine months after the operation. Two hepatic metastasis were also demonstrated by ultrasonography

Implante tumoral em sítio de trocarte após colecistectomia laparoscópica