Incomplete bladder duplication presenting antenatally

Are children with congenital solitary kidney at risk for lifelong complications? A lack of prediction demands caution

“…In particular, VUR was more frequently associated with CSFK [16] (15% of cases), followed by pyeloureteral junction obstruction (PUJO) (12%), ureterovesical junction obstruction (2%), and other urological anomalies in 9% of children with CSFK [5,7,16,17]. Furthermore, other rare associations have been reported such as complete bladder duplication and bladder neck obstruction [17].…”

“…In particular, VUR was more frequently associated with CSFK [16] (15% of cases), followed by pyeloureteral junction obstruction (PUJO) (12%), ureterovesical junction obstruction (2%), and other urological anomalies in 9% of children with CSFK [5,7,16,17]. Furthermore, other rare associations have been reported such as complete bladder duplication and bladder neck obstruction [17]. There have been rare occurrences of hypoplastic bladder with a single ectopic ureter [18], ureteral triplication with VUR [7,19], and contralateral orthotopic or ectopic renal buds, ectopic ureteral insertion, and crossed renal ectopia [20], all associated with CSFK.…”

Prenatal Diagnosis of Incomplete Bladder Duplication: Sonographic Features and Perinatal Management

“…The term incomplete refers to absent duplication of the urethra, and it is associated with a better prognosis, unlike the complete variant, which is often associated with duplication of the hindgut and the external genitalia 1 , 2 . Both types are not usually linked to an abnormal karyotype, and the prognosis depends on urinary obstruction/infection and possible associated malformations 3 , 4 . Sonography can be useful to identify them prenatally.…”

“…Incomplete bladder duplication is a rare abnormality with only 7 cases reported in the literature 2 , 4 . Based on the Abrahamson classification, 5 complete or incomplete bladder duplication depends on the presence or absence of a duplicated urethra, respectively.…”

“…Other differential diagnoses include a multilocular bladder, a ureteral or bladder cyst or diverticulum, and a septated bladder 4 , 7 . In female fetuses, an ovarian cyst can be excluded, since the umbilical arteries would course around the bladder.…”