Amin M B, Tickoo S K, Schultz D
Department of Pathology, Henry Ford Hospital, Detroit, MI, USA.
Arch Pathol Lab Med. 1999 Jul;123(7):631-4. doi: 10.5858/1999-123-0631-MOTRS.
Extra-adrenal myelolipomas are rare; approximately 36 cases have been reported to date. We document a case of myelolipoma presenting as a localized mass in the renal sinus of a 66-year-old man. The chief clinical and radiologic differential diagnostic considerations in this case included a malignant renal tumor arising in the hilum. The patient was being investigated for recurrent urinary tract infections and vague abdominal pains. Histologically, the lesion showed features characteristic of a myelolipoma. There was also marked chronic inflammation in and around the mass. The uneventful follow-up of 62 months is in keeping with the benign nature of this lesion. This report expands the possibilities of the differential diagnoses of renal hilar neoplasms, particularly in view of the increased use of imaging techniques that are bound to detect many incidental lesions in this region.
肾上腺外髓脂肪瘤罕见；迄今为止约有36例病例报告。我们记录了一例发生在一名66岁男性肾窦内的局限性髓脂肪瘤病例。该病例主要的临床和影像学鉴别诊断考虑包括起源于肾门的恶性肾肿瘤。该患者因反复尿路感染和腹部隐痛接受检查。组织学上，病变表现出髓脂肪瘤的特征性表现。肿块内及周围还有明显的慢性炎症。62个月的平稳随访与该病变的良性性质相符。本报告扩大了肾门肿瘤鉴别诊断的可能性，特别是考虑到成像技术的使用增加，必然会在此区域检测到许多偶然病变。
