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Isolated Extranodal Rosai-Dorfman Disease on 18F-FDG PET-CT Scan

机译:18F-FDG PET-CT扫描分离出结外罗莎-多夫曼病

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Rosai–Dorfman disease (RDD) is an uncommon proliferative histiocytic disorder. Patients usually present with painless massive cervical lymphadenopathy with fever and leukocytosis. Isolated extranodal disease is rare and more severe fibrosis, fewer histiocytosis in lesions make diagnosis more difficult as compared to nodal disease. Here, we report a case of isolated extranodal RDD on fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET-CT) scan. FDG-avidity of RDD lesions is attributable to the intense glucose dependence of the proliferating histiocytes. PET-CT scan not only demonstrates the complete staging of the disease but also provide functional information about the disease activity to guide biopsy.
机译:Rosai-Dorfman病(RDD)是一种罕见的增生性组织细胞性疾病。患者通常表现为伴发烧和白细胞增多的无痛性大规模颈部淋巴结病。与结节性疾病相比,孤立的结外性疾病很少见,且纤维化更为严重,病变中组织细胞增多症的发生使诊断更加困难。在这里,我们报告一例在氟脱氧葡萄糖(FDG)正电子发射断层扫描计算机断层扫描(PET-CT)扫描上孤立的结外RDD病例。 RDD病变的FDG亲和力可归因于增殖性组织细胞对葡萄糖的强烈依赖性。 PET-CT扫描不仅可以显示疾病的完整分期,还可以提供有关疾病活动的功能信息,以指导活检。

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