case_images: PMC11586791_01
case_images: Medical image. A: Ultrasound examination showing a mass in the right kidney with hypoechoic areas and echogenic stones within, accompanied by posterior acoustic shadowing. Color doppler flow imaging shows blood flow signals within the mass; B: Computed tomography urography views show the mass and internal stones Coronal; C: Sagittal; D: The tumor shows slightly low signal intensity on T1 weight ed imaging; E: Magnetic resonance T2-weighted imaging shows a clearly defined right renal tumor with a low signal pseudocapsule (arrow). The internal signal is heterogeneous, with nodular short T2 signal stones and long T2 cystic necrosis. The solid tumor tissue shows isointense T2 signal; F: Diffusion-weighted imaging shows high signal intensity in the solid tumor tissue and low signal intensity in the cystic necrotic areas. Enlarged lymph nodes are visible in the retroperitoneum (arrow); G: Apparent diffusion coefficient map shows low signal intensity in the solid tumor components; H: Contrast-enhanced scan shows heterogeneous mild enhancement of the solid tumor components.
case_images: 100037-g001.jpg
case_images: PMC11586791_01_100037-g001.jpg
case_images: F1
case_images: Color doppler flow imaging showed blood flow signals (Figure 1A). Computed tomography urography revealed a right kidney mass measuring approximately 6 cm x 4 cm; it contained septations and stones, with mild irregular enhancement of the posterior wall (Figure 1B and C). T1- weight ed imaging. (Figure 1D). the mass had a central stone signal with long T1 and short T2, approximately 17 mm in diameter, surrounded by fluid signal with long T1 and T2. The tumor had a clear pseudocapsule on the T2-weighted imaging (T2WI) sequence (Figure 1E). The cyst wall was thick and irregular, showing high signal intensity on diffusion-weighted imaging (DWI) (Figure 1F) and Enlarged lymph nodes were observed in the retroperitoneum (Figure 1F, arrow). low signal intensity on apparent diffusion coefficient (ADC) (Figure 1G), with mild irregular enhancement postcontrast (Figure 1H).