患者女,18岁。偶然发现上腹部包块一周,来我院检查。体检:腹稍膨隆,上腹可触及一大小约12cm×13cm包块,质中,表面光滑,无压痛,可活动。超声检查结果:肝脏下方、胃右下方、胰头颈部及右肾前方探及一大小为13cm×13cm×8.1cm囊实性团块,边界清楚,有包膜,后方回声增强,可随呼吸轻 Patient female, 18 years old. Occasionally found on the abdominal mass a week, to our hospital examination. Physical examination: slightly bulging belly, upper abdomen can reach a size of about 12cm × 13cm mass, quality, smooth surface, no tenderness, activity. Ultrasound results: below the liver, lower right stomach, head and neck of the pancreas and right kidney exploration and a size of 13cm × 13cm × 8.1cm cystic solid mass, clear boundary, a capsule, the rear echo enhancement, with breathing light