Prolapse of the amniotic sac through the partially dilated cervical os in pregnancy is called 'hourglass membranes'. Ultrasonography may be useful in identifying the presenting fetal or intra-uterine parts within the bulging membranes.
|Original language||English (US)|
|Number of pages||4|
|State||Published - 1981|
ASJC Scopus subject areas
- Radiological and Ultrasound Technology