Radiologic features of Castleman’s disease involving the renal sinus: A case report and review of the literature

Figure 2 Histological examination of the right kidney in a 65-year-old woman. A: Photomicrograph (original magnification, 40×; hematoxylin-eosin staining) showing hyperplastic lymphoid follicles (asterisks) in renal sinus fat tissue below the normal renal pelvis (open arrow) in the lower right renal sinus; B: Interfollicular areas showing heavy staining.