case_images: PMC11324259_01
case_images: Chest-abdomen-pelvis computed tomography (CT) scan. Coronal (a) and axial (c) CT projections showing a right renal tumor measuring 15.4 x 10.5 cm dependent on the upper pole that crosses the interpolar line and infiltrates the renal sinus, with a hypodense center suggestive of extensive necrosis of the tumor. No evidence of lymphadenopathy suggestive of tumor activity, nor distant disease. In control, computed tomography scan, coronal (b) and axial (d), without evidence of locoregional or distant tumor activity.
case_images: cro-2024-0017-0001-540279_F01.jpg
case_images: PMC11324259_01_cro-2024-0017-0001-540279_F01.jpg
case_images: F1
case_images: No evidence of lymphadenopathy suggestive of tumor activity, nor distant disease (see Fig. 1). Currently, the patient is asymptomatic, with good functional status and with a contrast-enhanced tomography study of the chest, abdomen, and pelvis with no evidence of tumor activity (see Fig. 1).
case_images: The microscopic study showed: in hematoxylin and eosin staining (a, b), a classic triphasic growth pattern was reported, of blastemal cells, stromal cells, and epithelial differentiation that includes tubules and primitive glomeruli. Immunohistochemistry revealed positive staining for WT1 (c), PAX8 (d), AE1/AE3 (e), and CD117 (f).
case_images: cro-2024-0017-0001-540279_F02.jpg
case_images: PMC11324259_01_cro-2024-0017-0001-540279_F02.jpg
case_images: F2
case_images: The vessels of the renal sinus are not involved (see Fig. 2).