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患者，男性，７４岁。排尿困难３年。血清PSA含量为４０ng／ml。肛诊前列腺重度肿大，质硬，向膀胱内口突出。于１９９７年８月１３日在硬膜外麻醉下行前列腺切除术。肉眼观察：前列腺大小５cm×４cm×３cm，切面灰黄色，质硬。镜下见肿瘤主要由片巢状排列印戒细胞构成，胞质内
Patient, male, 74 years old. Difficulty urinating for 3 years. Serum PSA content of 40ng / ml. Anorectal severe prostate enlargement, hard, prominence to the bladder. Prostatectomy was performed on epidural anesthesia on August 13, 1997. The naked eye: prostate size 5cm × 4cm × 3cm, cut grayish yellow, hard. Microscopically see the tumor mainly by the nests of cells arranged in signet ring cells, the cytoplasm