患者,女性,40岁。右腰部疼痛半年。体检:右后肋下可触及6×4cm的肿块,质硬,有压痛。摄片腹膜后右肾占位性病变可能。B超证实为实质性肿块。于1987年3月12日行右肾切除术。 大体:肾脏13.5×8.5×3.5cm,呈结节状,结节径0.2～6.5cm,表面血管丰富,切面大部分肾组织被肿瘤占替:后者呈灰红色,质软,细腻,鱼肉状。镜下:肿瘤境界不清,瘤细胞大多呈梭形,少数则呈蝌蚪形,交 Patient, female, 40 years old. Right lower back pain for six months. Physical examination: 6 × 4cm mass can be touched under the right posterior rib, hard, tenderness. Retroperitoneal right renal space-occupying lesions may be. B-confirmed as substantive lumps. On March 12, 1987 line of right nephrectomy. Roughly: Kidney 13.5 × 8.5 × 3.5cm, nodular, nodular diameter 0.2 ~ 6.5cm, the surface of the blood vessels rich in section, most of the kidney tumor is replaced by the tumor: the latter is gray-red, soft, delicate, fishy . Microscope: the tumor state is unclear, most of the tumor cells fusiform, a few were tadpole-shaped, pay