Amniotic bands (Q54586): Difference between revisions

Amniotic bands are developmental anomalies thought to be due to a rupture of the amnion during the first trimester of gestation, resulting in adhesions leading to annular constrictions, and bands between torn amnion and chorionic mesenchyme. Besides annular constrictions, pseudo-syndactyly, intra-uterine amputations, and umbilical cord constrictions may also be seen. In addition, the decrease in amniotic fluid and/or a possible tethering of a limb by an amniotic band may result in a decrease in fetal movements, and in scoliosis, foot deformity, lung hypoplasia, and hydrops.