title: Castleman's disease of the kidney: Sonographic findings.
abstract: We report a case of rare Castleman's disease of the kidney that mimicked a renal neoplasm with emphasis on the imaging and histologic findings. A 47-year-old man presented with dyspeptic symptoms. Ultrasound revealed a vascular, heterogeneous mass in the left kidney. Multiphasic CT scan confirmed an enhancing lesion with enlarged left para-aortic lymph nodes suspicious for nodal metastases. The provisional diagnosis was renal cell carcinoma. Percutaneous biopsy yielded a diagnosis of Castleman's disease of the hyaline-vascular type. Despite advancement in imaging modalities, differentiation of hyaline-vascular variant of Castleman's disease from hypervascular renal neoplasm remains difficult and the final diagnosis requires histopathological confirmation.
authors.affiliation: Department of Diagnostic Radiology, Singapore General Hospital, Block 2, Level 1, Outram Road, Singapore, 169608.
authors.forename: Chin Chin
authors.initials: CC
authors.lastname: Ooi
authors.affiliation: Department of Diagnostic Radiology, Singapore General Hospital, Block 2, Level 1, Outram Road, Singapore, 169608.
authors.forename: Foong Koon
authors.initials: FK
authors.lastname: Cheah
authors.affiliation: Department of Diagnostic Radiology, Singapore General Hospital, Block 2, Level 1, Outram Road, Singapore, 169608.
authors.forename: Siew Kune
authors.initials: SK
authors.lastname: Wong
mesh_terms: D005871:Castleman Disease / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
keywords: Castleman' s disease; renal tumor; ultrasonography