Duplication of the Renal Pelvis and Blind-Ending Bifid Ureter in Twins

Abstract

Blind-ending bifid ureter in a woman with urinary tract infection and a duplicated renal pelvis in her twin sister are reported. The blind-ending bifid ureter terminated as a fibrous cord with a terminal mass of immature renal tissue. This type of ureter may be a transitional form between histologically blind-ending bifid ureter and duplication of the renal pelvis and/or kidneys. Findings in twins support this opinion.

Double Trouble: The Blind Duplex Ureter

“…The majority of duplication anomalies affect females (female:male 3:1) and can be genetically inherited showing concordance [3,4]. Symptoms can include those of infection and calculi but are often ill-defined presenting as non-specific chronic flank pain, colic or vague abdominal pain most often affecting the right side [5].…”