CASTLEMAN DISEASE WITH RENAL AMYLOIDOSIS - IMAGING FINDINGS AND CLINICAL-SIGNIFICANCE

We report two cases of renal amyloidosis associated with mesenteric an d mediastinal Castleman disease of plasma cell type. Computed tomograp hic (CT) scan revealed a mesenteric mass with multiple nodal enlargeme nt in one patient and a right paratracheal mass with irregular central calcifications in the second patient. Renal ultrasonography (US) show ed increased echogenicity of the renal parenchyma with prominent medul las. Doppler waveform obtained in the kidney associated with mesenteri c disease showed complete absence of diastolic how signal, although it was normal in the patient with mediastinal disease. Recognition of Ca stleman disease as the cause of renal amyloidosis and the understandin g of CT and US findings of this entity are important for the managemen t, as well as its diagnosis.