Department of Urology, Chongqing Children's Hospital, Chongqing Medical University, Chongqing, 400014 China.
J Pediatr Surg. 2011 Jun;46(6):1281-3. doi: 10.1016/j.jpedsurg.2011.03.015.
Lipoma of the kidney is a rare benign renal tumor that previously had been reported only in adults. We present a case of this tumor in a 2-year-old boy. Serial imaging studies revealed a tumor with high fat content arising from the right kidney. Radical nephrectomy was performed for tumor excision. Macroscopically, the tumor consisted of a yellow fatty mass, which was surrounded by a thin fibrous capsule. The tumor was about 600 g, and the kidney was compressed laterally by the tumor. Microscopically, the tumor consisted of large fat cells that did not express human melanoma black-45 (HMB-45). It was diagnosed as a renal lipoma. Postoperatively, there has been no recurrence of tumor in the 10 months since the surgical excision.
肾脏脂肪瘤是一种罕见的良性肾肿瘤，此前仅在成人中报道过。我们报告了一例发生在 2 岁男孩的肾脏脂肪瘤。连续影像学研究显示右肾起源的具有高脂肪含量的肿瘤。为了切除肿瘤，进行了根治性肾切除术。大体上，肿瘤由黄色脂肪团块组成，被薄纤维囊包围。肿瘤约 600 克，肾脏被肿瘤侧向压缩。显微镜下，肿瘤由不表达人黑色素瘤黑-45（HMB-45）的大脂肪细胞组成。诊断为肾脂肪瘤。手术后，在手术切除后的 10 个月内，肿瘤没有复发。
