Methods: Retroperitoneoscopic was applied in 14 cases, 11 of which adopted straight and closing method of entering retroperitoneum.Open surgery was applied in 21 cases.

• 方法：14例单纯性肾囊肿行后腹腔镜手术，其中11例采用直接闭合式方法进入后腹腔，21例行开放性手术。