An abnormality of the skull, the bony framework of the head which is comprised of the neurocranium (with eight cranial bones) and the viscerocranium (facial skeleton) that comprises fourteen facial bones with the mandible as its largest bone.
Abnormal thorax morphology +
Abnormality of the face +
Abnormality of the vertebral column +
Aplasia/hypoplasia affecting bones of the axial skeleton +