肾源性腺瘤是肾上皮增生形成的良性肿瘤,可累及泌尿生殖道的任何部位。Diolombi等报道3例侵犯肾周脂肪组织的肾源性腺瘤病例,对其临床和病理学特点进行描述分析,防止被误诊为浸润癌。例1,71岁,高血压和抑郁症病史,主诉侧腹部疼痛。CT示出血性左肾肿瘤和自发性腹膜后出血。部分肾切除术后病理检查显示为良性囊肿并局灶区管状乳头状增生并局部出血。部分切除的肾周脂肪组织显示为空洞性病变,内容质软棕褐色物质,符合出血。空洞壁镜下表现为出血相关的密 Renal adenoma is a benign tumor of renal epithelial hyperplasia that can affect any part of the urogenital tract. Diolombi et al. Reported 3 cases of nephrogenic adenoma which infiltrated the perirenal adipose tissue, and described the clinical and pathological features to prevent being misdiagnosed as invasive carcinoma. An age of 17 years, with a history of hypertension and depression, complains of abdominal pain. CT shows bloody left kidney tumors and spontaneous retroperitoneal bleeding. After partial nephrectomy pathological examination showed benign cysts and focal area tubular papillary hyperplasia and local bleeding. Partial excision of the perirenal adipose tissue showed a hollow lesion, the content of soft tan material, consistent with bleeding. Empty wall mirror showed bleeding-related secret