ABSTRACT
Hydrocolpos is characterized by a vaginal obstruction with cystic dilatation of the
vagina. The latter is usually caused by accumulation of cervical and endometrial mucus
but in rare instances urine is accumulated through a vesicovaginal fistula proximal
to the obstruction. Hydrocolpos and hydrometrocolpos may be associated with other
malformations, such as postaxial polydactyly, anal atresia, esophageal atresia, renal
agenesis, genital anomalies, and cardiopathy. Each neonate presenting with hydrocolpos
should be evaluated for other clinically silent malformations, such as hamartoblastoma
of the hypothalamic region. We report a patient with urinary hydrocolpos and cloacal
malformation; it is the first case of hydrocolpos with pre-axial polydactyly. We briefly
describe embryogenesis of the different types of vaginal obstruction and discuss prenatal
and neonatal diagnosis and differential diagnosis.
Keywords
Hydrocolpos - pre-axial polydactyly - cloaca
