case_images: PMC11096510_01
case_images: Enhanced CT of the urinary system: a soft tissue mass is visible within the right superior ureter, with mild enhancement noted on an enhanced scan. (tumor location flat against the 2nd-3rd lumbar vertebrae). The arrow points to the tumor: (A) arterial phase; (B) venous phase; (C) coronal plane; (D) sagittal plane.
case_images: fonc-14-1368996-g001.jpg
case_images: PMC11096510_01_fonc-14-1368996-g001.jpg
case_images: f1
case_images: Enhanced computed tomography (CT) of the urinary system in our hospital (Figure 1) showed a nodular soft tissue shadow filling the lumen of the upper section of the right ureter (approximately at the level of the flat lumbar 2-3 vertebrae), with a larger cross-section of approximately 18mm x 17mm, and upper and lower diameters of approximately 36mm.
case_images: Microscopic view of tumor histopathological sections; (A) HE staining x100; (B) SOX10 histochemical staining.
case_images: fonc-14-1368996-g002.jpg
case_images: PMC11096510_01_fonc-14-1368996-g002.jpg
case_images: f2
case_images: Chronic pyelonephritis with atrophy of the renal parenchyma, sclerosis of some glomeruli, significant interstitial fibrosis, a large number of lymphoid hyperplasia and lymphoid follicle formations, and unspecified renal hilar vessels was noted (Figure 2).