Two cases of limited laparoscopic liver resection of benign tumors loc
ated in segment II and segment IV have been presented. The tumors were
found during preoperative studies of biliary attacks and studied by m
eans of ultrasonography and computed tomographic scan. During laparosc
opy, the exact localization and surgical limits of the tumors were det
ermined by visualization and laparoscopic ultrasonography. Dissection
during laparoscopy was performed using the endoscopic cavitational ult
rasonic surgical aspirator, achieving resection of the tumors with min
imal blood loss.