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Atypical sarcoidosis diagnosed by bone marrow biopsy during renal workup for possible multiple myeloma

机译:肾脏检查期间骨髓活检诊断为可能的多发性骨髓瘤的非典型结节病

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摘要

Sarcoidosis is a multi-organ disease of unknown etiology characterized by non-caseating granulomas. Here we report the case of a 78-year-old white male with a past medical history of diabetes mellitus, hypertension, and chronic kidney disease stage III with a baseline serum creatinine of 2.5 mg/dl. The patient had a prior admission history for acute kidney injury (AKI) attributed to dehydration and medication-induced nephro-toxicities. He presented to the renal clinic for follow-up with acute worsening of chronic kidney failure with a serum creatinine level of 3.5 mg/dl. Examination revealed that he was anemic and mildly hypercalcemic with suppressed parathyroid hormone and had proteinuria of 1.3 g per day. The computed tomography scan of the abdomen revealed right renal pelvic non-obstructing calculi. Serum protein electrophoresis revealed gammopathy with two distinct monoclonal peaks consisting of immunoglobulin G (IgG) kappa and IgG lambda, respectively. The kappa/lambda ratio was within normal limits, and urine protein electrophoresis showed no evidence of a monoclonal peak or Bence Jones proteins. Further workup for multiple myeloma, including bone marrow (BM) biopsy, revealed polyclonal plasma cells and B cells with no clonality. No morphological and immune-phenotypic evidence of plasma cell dyscrasia was found, but BM biopsy did show numerous non-caseating granulomas consistent with sarcoidosis. Skin biopsy from non-scaly 6-mm skin colored papule also showed non-caseating granulomas. The patient had elevated angiotensin-converting enzyme levels (165 ug/l) and an erythrocyte sedimentation rate of 27 mm/h. Kidney biopsy did not show granulomas. The hypercalcemia, proteinuria, and AKI responded well after 2 weeks of 60 mg oral prednisone daily.
机译:结节病是一种病因不明的多器官疾病,其特征为非干酪性肉芽肿。在这里,我们报告了一位78岁的白人男性,该患者过去有糖尿病,高血压和慢性肾脏疾病III期的病史,基线血肌酐为2.5 mg / dl。该患者因脱水和药物引起的肾毒性而有急性肾损伤(AKI)的入院史。他出现在肾脏诊所进行随访,发现血清肌酐水平为3.5 mg / dl,导致慢性肾功能衰竭的急性恶化。检查显示他贫血,轻度高钙血症,甲状旁腺激素被抑制,每天尿蛋白1.3克。腹部电脑断层扫描显示右肾盂无阻塞性结石。血清蛋白电泳显示带有两个分别由免疫球蛋白G(IgG)kappa和IgG lambda组成的单克隆峰的丙种病。 κ/λ比在正常范围内,尿蛋白电泳未显示单克隆峰或Bence Jones蛋白的迹象。对多发性骨髓瘤的进一步检查,包括骨髓活检,发现多克隆浆细胞和无克隆性的B细胞。没有发现浆细胞发育不良的形态学和免疫表型证据,但BM活检确实显示出许多与结节病一致的非干酪性肉芽肿。非鳞状6毫米皮肤彩色丘疹的皮肤活检也显示非干酪性肉芽肿。该患者的血管紧张素转化酶水平升高(165μg/ l),红细胞沉降速率为27mm / h。肾脏活检未显示肉芽肿。每天口服60 mg泼尼松2周后,高钙血症,蛋白尿和AKI反应良好。

著录项

  • 来源
    《CEN Case Reports》 |2013年第1期|102-106|共5页
  • 作者单位

    James A. Haley Veterans Hospital University of South Florida">(1);

    Division of Nephrology Bone and Mineral Metabolism University of Kentucky Chandler Medical Center">(2);

    James A. Haley Veterans Hospital University of South Florida">(1);

    James A. Haley Veterans Hospital University of South Florida">(1);

    James A. Haley Veterans Hospital University of South Florida">(1);

    James A. Haley Veterans Hospital University of South Florida">(1);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sarcoidosis; Bone marrow; Proteinuria; Renal failure;

    机译:结节病;骨髓蛋白尿肾功能衰竭;

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