Preschooler with hypertension and a right ureteropelvic junction obstruction Pediatric Imaging Surgical-Pathological-Clinical January 26, 2023December 17, 2022 Sectioned gross pathological image shows an ovoid gray to tan mass surrounded by a thin fibrous capsule that is compressing the right ureter resulting in right hydroureteronephrosis. The diagnosis was paraganglioma causing ureteropelvic junction obstruction. Related Published January 26, 2023December 17, 2022