Fetal scalp cysts--dilemmas in diagnosis

Detection of fetal scalp cysts may pose diagnostic challenges in terms of differentiating between structures whose origin is ectodermal, so presumed benign, and neuroectodermal, potentially having neurological significance. We describe the first case of a fetal scalp dermoid cyst to be detected antenatally and discuss the concept of sequested meningoceles which may not have neurological consequence but can be associated with other structural abnormalities.