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There are increasing reports of seeding of tumor at the trocar sites following laparoscopic cholecystectomy in patients with unexpected or inapparent gallbladder carcinoma. A patient is reported here whose primary tumor appeared controlled by surgery and radiation, but who died of the disease after developing implant metastases at three untreated trocar sites. The second case report illustrates the difficulty in identifying gallbladder cancer during laparoscopic cholecystectomy, and the importance of a diligent preoperative effort to establish the diagnosis. Current literature suggests that tumor implantation occurring during laparoscopic cholecystectomy for inapparent carcinoma adversely affects prognosis, and, until the effect of laparoscopy on the spread of this tumor is better understood and controlled, open operation should be performed when carcinoma of the gallbladder is suspected. When laparoscopic cholecystectomy is done for inapparent gallbladder cancer, surgical and adjuvant radiotherapy to the trocar sites appears to improve outcome in association with extended treatment to the gallbladder bed and adjacent areas. Recent reports suggest that progress in diagnostic, surgical, and adjuvant techniques could substantially improve survival in carcinoma of the gallbladder.