Double Trouble: A Case Report of Caudal Duplication Syndrome.

Caudal duplication syndrome is a rare congenital anomaly with various duplications of structures derived from the embryonic cloaca and notochord. A male neonate was born with diphallia, bifid scrotum, and duplicated anorectal malformation. Diagnostic and operative evaluation identified a partially duplicated right kidney with left-to-right crossed fused ectopia, bilateral hydronephrosis, 2 separate hemi-bladders, left ectopic ureter with vesicoureteral reflux, and a left rectourethral fistula. To our knowledge, this is the first reported caudal duplication anomaly with complete genitourinary duplication, with diphallia, duplicated bladder, bifid scrotum, extra-numerary kidneys, and a duplicated rectum.