患者　女 ,14岁。月经未来潮。 2个月前无诱因感下腹隐痛 ,发现下腹正中有一小碗大小包块。以后腹痛逐渐加重伴腹胀 ,腹部异常膨隆呈足月妊娠状外形。查体 :全腹扪及囊性包块 ,上界达剑突下 ,肛诊扪及包块下界。实验室检查未见异常。Ｂ超 :腹腔探及一巨大囊实性混合性包块 ,上 Female patient, 14 years old. Menstruation future tide. 2 months ago, no sense of urgency abdominal pain, found in the middle of the lower abdomen there is a small bowl of size. After the gradual increase in abdominal pain with abdominal distension, abdominal abnormalities were full-term gestational shape. Physical examination: full abdominal palpable cystic mass, the upper limit of the xiphoid, palpable anus palpable lower mass. Laboratory tests showed no abnormalities. B-ultra: abdominal exploration and a huge cystic solid mixed mass, on