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We describe a case with a giant hepatic cyst and associated symptoms that was treated laparoscopically. A 63-year-old man who developed right hypochondrium pain in 2006 was previously diagnosed with cholecystitis. The pain recurred in February 2013, and he visited to our hospital. Computed tomography indicated a 20-cm hepatic cyst in the right liver lobe, which exerted pressure on the gallbladder and adjacent organs. A laparoscope and forceps were introduced following a single umbilical incision. Another port was established on the right flank for drain insertion. Deroofing of the cyst was performed, and the greater omentum was inserted into the cyst to prevent re-accumulation of cystic fluid. As hepatic cysts are benign, invasive procedures should be avoided. Thus, we performed laparoscopic surgery for a hepatic cyst as a radical treatment with low invasiveness, by ensuring that all ports, excluding the drainage hole, were restricted to the umbilical portion.
