患者女,50岁,右上腹包块23年,增长迅速4年,右上腹可触及20ｃｍ×18ｃｍ大小包块,质硬,无压痛,活动性差。ＣＴ检查示“后腹膜肾周间隙良性占位,畸胎瘤可能,压迫性左肾盂积水”。术中见肿块位于右肾后方,60ｃｍ×50ｃｍ×30ｃｍ,部分实性,部分囊性。病理检查　瘤体标本19ｃｍ×12 Female patient, 50 years old, right upper quadrant mass 23 years, the rapid growth of 4 years, right upper quadrant palpable size 20cm × 18cm mass, hard, no tenderness, poor mobility. CT examination showed “peritoneal space peritoneal benign space, teratoma may be pressure on the left hydronephrosis.” Intraoperative see mass in the right kidney behind, 60cm × 50cm × 30cm, part of the solid, partially cystic. Pathological examination of tumor specimens 19cm × 12