20y Female with over distended uterus
for her period of amenorrhoea.
31 to 32 weeks gestational age on ultrasonography.
FINDINGS :
Umbilical cord shows only one artery instead of two arteries along with polyhyhroamniosis.
Stomach is not seen inspite of periodical scanning.
( esophageal
atresia.).Not showen in the figure.
DISCUSSION:
About 0.2-2 % of time umbilical cord shows only two vessels,
with missing of one artery.
There is
increased incidence ( 14-62 %) of fetal abnormalities when
there are only two vessels.Inthe absence of associate abnormalities, an isolated single
umbilical artery does not increase the risk
of chromosome aberrations. with this abnormality areat incresed risk
congenital abnormalites,chromosomal abnormalities, IUGR, prematurity and
perinatal mortality.
Reference :
Differential diagnosis in obstetric and gynecologic ultrasound
by R A L
BISSET, A.N.KHAN AND N.B.THOMAS,
Clinical sonography by ROGER SANDERS.
Submitted by : Dr. Adinarayana Rao
& Dr.Swarna Latha
