Ipsilateral retroperitoneal papillary renal cell carcinoma 27 years after simple nephrectomy for a renal abscess: A case report

Figure 4 Microscopic findings of hematoxylin and eosin staining. A: Tubulopapillary structures with some microcystic changes (×100); B: Papillary structures associated with accumulation of foamy histiocytes (×100); C: Tubulopapillary structures lined by eosinophilic epithelial cells with high-grade nuclear features of Fuhrman nuclear grade 3-4 (×200); D: Psammomatous calcific bodies scattered over tubular lumina and interstitial stroma (×200).