case_images: PMC11785536_01
case_images: CT scan: A solid mass of 9 x 6 cm of diameter containing some areas of necrosis, well circumscribed, well encapsulated at the expense of the right kidney in contact with the cephalic portion of the pancreas and in close contact with the inferior vena cava, which is pushed to the left. The right kidney is not visualized.
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case_images: The right kidney was not visualized, and no secondary lesions were detected (Fig. 1).
case_images: MRI: A solid mass in the upper right of the abdomen without visualization of normal right kidney parenchyma.
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case_images: However, it confirmed only the presence of the tumor and the absence of normal renal parenchyma, providing no additional information regarding the origin of the upper right abdominal quadrant mass (Fig. 2).
case_images: CT scan evaluation after chemotherapy: Regression in size of the right kidney mass with an estimated response of 75%.
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case_images: Post-chemotherapy CT evaluation demonstrated a 75% reduction in the size of the right kidney mass (Fig. 3).
case_images: (a) Preoperatively finding. (b) Macroscopic aspect of the tumor.
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case_images: An extended right nephrectomy was performed (Fig. 4a and b).
case_images: (a) Viable nephroblasma with blastemal and epithelial component (HE x 40). (b) Non-tumoral kidney tissue showing lesions of MCDK disease (HE x 40).
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case_images: Some tubules were cystic and surrounded by fibro-muscular tissue, without any normal renal parenchyma (Fig. 5a and b).