先天性絞扼輪症候群の2例

Abstract

We encountered two cases of congenital constriction band syndrome (CCBS). The first case was 11-day-old boy weighing 3,150g delivered at 38 weeks of gestational age. He revealed constriction band on the proximal part of the right index, digitus medius and digitus anularis. These fingers were shortened and syndactyly between digitus medius and digitus anularis was present with fenestration. The second case was a 0-day-old girl weighing 1,590g delivered at 36 weeks of gestational age. Fetal echography revealed decreased amniotic fluid and intrauterine growth retardation at 36 gastational weeks. She had a constriction band of the left wrist joint with deformity of the left hand. Both infants were diagnosed with congenital constriction band syndrome based on the presence of a typical constriction band, without any other anomaly. Therefore, disruption of the amniotic membrane was speculated to have occurred at 5 to 7 weeks of gestational age.