EP26.18: Megabladder: five cases reported in the last five years in our tertiary centre

Abstract

The aim of this study was to present a series of cases of megabladders diagnosed prenatally in the last 5 years in our centre. This was a descriptive retrospective study of fetus with megabladder diagnosed in our hospital in last 5 years and their follow-up. Mean age women patients was 27 years old (SD +− 10). Mostly of the patients were not any medical conditions (only an interventricular communication without follow-up). 4 was primiparous and one gestation was with reproduction techniques. Ultrasound diagnoses were at first trimester ultrasound in three cases, remaining two were in early morphological ultrasound (17wk and 18wk). Mean bladder volume of fetuses with diagnosed in first trimester was 14.5 mm3 and in fetuses with diagnosed in second trimester was 27.83 mm3. Two fetus had not any associated malformations and one of them has a spontaneous resolution (already pregnancy is in course). The other one had a Berdon Syndrome, diagnosed with amniocentesis (parents decided termination). In the remaining fetus, one of them was diagnosed of hydrops and late miscarriage was happened. Other one also had other urinary anomalies and the last one severe oligohydramnios (both of them were interrupted legally). In 4 of the 5 cases, pregnancies ended in late miscarriage or in legal termination, similar statistic has been described in bibliography. Prevalence of megabladder diagnosed ranges between 0.06% and 0.3%. Differential diagnosis should be made with other abdominal masses such as ovarian cysts or peritoneal cysts. Once confirmed associated abnormalities or syndrome should be taken into account such as posterior urethral valves, urethral stricture, Prune-Belly syndrome or other rarer syndromes such as Beuren syndrome. Termination or miscarriage is the major described end.