Diagnostic ultrasound ( PDFDrive )

1330 PART IV Obstetric and Fetal Sonography
A
B
FIG. 38.36 Amniotic Band Syndrome. (A) Transverse view of abdomen shows anterior abdominal wall defect. (B) View of lower extremity
shows constriction ring caused by amniotic bands. The constellation of indings is consistent with amniotic band syndrome.
Amniotic Band Syndrome
Amniotic band syndrome can afect any part of the fetus, and
in a small proportion of cases it can afect the fetal abdominal
or thoracic walls. 247 In these cases, the defect can appear similar
to that of gastroschisis, with the abdominal and/or thoracic
organs loating freely within the amniotic cavity with no sac
around them (Fig. 38.36). he diagnosis of amniotic band
syndrome is suggested by the demonstration of the amniotic
bands and the presence of additional indings that are associated
with disruption due to amniotic bands including limb defects
(constriction or amputation of a limb), encephalocele, and facial
clets. 248 Unlike body stalk anomaly, the umbilical cord can be
demonstrated in these cases.
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