case_images: PMC7270496_01
case_images: (A) Ultrasonographic showing a moderate left hydronephrosis with thin renal cortex; (B) Retrograde ureteropyelography revealing ureteral papilloma, left upper-ureteral filling defect of the ureter; (C) Abdominal computed tomography scan confirmed a filling defect lesion with smooth margin in the proximal left ureter and left hydronephrosis.
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case_images: PMC7270496_01_gr1.jpg
case_images: fig0005
case_images: Ultrasonography shows dilation of the right ureter and renal pelvis with moderate hydronephrosis observed (Fig. 1A). The retrograde urography confirmed a 1.5 cm lesion with filling defects in the proximal segment of the right ureter (Fig. 1B). Excretory phase image from an abdominal computed tomography scan demonstrated moderate dilation of the right renal pelvis and calyces, with related cortical atrophy due to hydronephrosis (Fig. 1C).
case_images: (A) Macroscopic study of specimen shows a segment of proximal ureter, measuring 4 cm in length that reveals a mass in the middle part of the ureter; (B) HE staining showing a papillomatous tumor; (C) Papillae show slender with minimal branching composed of a delicate fibrovascular core with numerous small capillaries which covered by proliferating normal-appearing urothelium lacking atypia.
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case_images: PMC7270496_01_gr2.jpg
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case_images: On the macroscopic study of the specimen, after a longitudinal incision, a sessile mass with a defined margin with 1.5 cm in diameter was exposed in the middle part of the sample was extended along the ureter (Fig. 2A). Papillae show slender with minimal branching composed of a delicate fibrovascular core with numerous small capillaries which covered by proliferating normal-appearing urothelium lacking atypia (Fig. 2B), including the presence of umbrella cells (Fig. 2C).