A prenatally recognizable malformation syndrome associated with a recurrent post‐zygotic chromosome rearrangement der(Y)t(Y;1)(q12:q21)

Several cases of mos 46,X,der(Y)t(Y;1)(q12;q21)/46,XY with multiple anomalies have been reported. I report on an additional case of a male fetus with a mosaic male karyotype mos 46,X,der(Y)t(Y;1)(q12;q21)[31]/46,XY[21] and multiple anomalies that included "teardrop"-shaped head with a triangular face, a short-nasal bridge with upturned nose, microretrognathia, microtia, kyphoscoliosis, oligodactyly, syndactyly, joint contractures, CNS …