Simple (non-parasitic) liver cysts: clinical presentation and outcome.

Non-parasitic hepatic cysts are frequent and usually asymptomatic. Investigation must differentiate from parasitic or neoplastic cysts. Ultrasonography, computed tomography, magnetic resonance imaging and serology do not always ensure a definitive diagnosis, where as other diagnostic methods offer little assistance. Symptoms, complications or uncertain diagnosis make treatment necessary. Various techniques have been used in management of non-parasitic hepatic cysts. Both surgical and recent minimally invasive methods such as laparoscopy and percutaneous aspiration with sclerotherapy are discussed and evaluated. Treatment of choice or indications for each method remains a controversial subject that requires further study.