Crossed non-fused renal ectopia

Case contributed by Yaïr Glick
Diagnosis certain


Right flank pain, difficult micturition, blood on urinary dipstick.

Patient Data

Age: 20
Gender: Male

No urinary stone in right ureter nor evidence of passage of such stone.
Tiny stone in upper calyx of right kidney.
Ectopic axially rotated left kidney crossed to the right, lying beneath the right kidney at the level of the umbilicus, medial to the ascending colon.

Done at age 5.6


An ultrasound study done at age 5.6 years clearly demonstrates two separate kidneys on the right.

Case Discussion

Known case of crossed non-fused left renal ectopia. Of note, he had undergone bilateral inguinal hernia repair at infancy and repair of hypospadias at age 4.
Non-fused renal ectopia is more rare than fused renal ectopia.

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