Vasa previa occurs when unprotected fetal vessels cross the internal cervical os, either within the membranes or via a low-tethered umbilical cord. Prenatal diagnosis relies on the transvaginal…
Pseudosac refers to fluid or blood in endometrial cavity and is typically associated with ectopic pregnancies. A true gestational sac is located paracentrically within the decidua and features a…
Determining chorionicity is paramount for twin pregnancy surveillance. A thin dividing amniotic membrane that inserts into the shared placenta at a perpendicular, characteristic "T" configuration…
The leakage of spinal fluid in spina bifida causes hindbrain herniation (Chiari malformation), pulling the cerebellum downward into a curved "banana" shape and causing the frontal bones to collapse…
When monitoring a fetus with suspected intrauterine growth restriction (IUGR) and unknown menstrual dates, traditional biometry (like the abdominal circumference) is unreliable for establishing…
Umbilical artery Doppler significantly reduces perinatal mortality in IUGR fetuses. While decreased diastolic flow shows rising placental resistance, reversed end-diastolic velocity is a catastrophic…
Based on the landmark 2025 study by Syngelaki et al. a routine 36-week ultrasound is essential, as nearly 32% of all prenatally diagnosed anomalies are first detected at this stage. A dedicated…
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Category: Obstetrics and Gynecology
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