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Renal myolipoosteoma: A distinctive lesion in a child

机译:肾肌肌肌瘤:孩子中有一个独特的病变

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摘要

We describe a distinctive renal tumor, a myolipoosteoma (MLO), in an 11-year-old boy who presented with a 6-month history of slight right flank intermittent pain. A gross examination revealed a welldefined, 5.5 cm mass with bone-like consistency. The lesion histologically featured an admixture of mature adipose tissue, spindle cells, and bony components. No atypia, mitotic activity, or pleomorphisms were observed in the tumor. The spindle cells were smooth muscle actin (SMA) and desmin positive but HMB45 and Melan-A negative, indicating that they were of a muscular nature and differed from that of angiomyolipoma (AML). The patient had no evidence of recurrence or metastasis 56 months postoperatively. We speculate that the present tumor, which to the best of our knowledge differs from all previously described tumors, is of nephrogenic rest (NR) origin and has a favorable prognosis. (C) 2017 Elsevier Ltd. All rights reserved.
机译:我们描述了一个独特的肾脏肿瘤,肌肌肌瘤(MLO),在一个11岁的男孩,他们呈现出6个月的轻微侧翼间歇性疼痛的历史。 总检验显示骨髓,5.5厘米的质量,骨状稠度。 病变组织学上精选成熟脂肪组织,主轴细胞和骨组分的混合物。 在肿瘤中没有观察到缺点,有丝分裂活动或渗透性。 主轴细胞是平滑肌肌动蛋白(SMA)和晶片阳性但HMB45和MELAN-A阴性,表明它们具有肌肉性质,与血管血瘤瘤(AML)不同。 患者没有证据表明术后56个月的复发或转移。 我们推测,迄今为止所知的目前肿瘤与所有先前描述的肿瘤不同,是肾病休息(NR)起源,具有良好的预后。 (c)2017 Elsevier Ltd.保留所有权利。

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