Congenital Ring-like Constriction due to Annular Bands: Report of Two Cases
Abstract
Summary: Two cases of congenital ring-like constriction due to annular bands are reported. One was a 3-month old Nigerian infant who was treated surgically and the other, a 7-day old caucasian who was managed conservatively. Congenital annular bands and amputations are uncommon forms of deformity whose aetiology was previously thought to be related to genetic and dietary factors. Recent evidence from animal experiments and human placental studies, however, seem to implicate amniotic rupture as the main cause
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