Atrophic kidney due to severe chronic obstructive hydronephrosis
Right flank migrating pain. Previous history of kidney stones.
CT Abdomen and pelvis (KUB)
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CT in KUB protocol showing a small calculus in the distal third of the right ureter promoting mild hydroureteronephrosis on this side. A left atrophic kidney is observed with a 1,6 cm calculus impacted in the pyeloureteral junction and causing chronic obstructive hydronephrosis. The left kidney measures 8,6 cm and the right kidney measures 12,9 cm.
The remainder of the exam is unremarkable.