Acroosteolysis, dominant type (Q98287)

Acroosteolysis dominant type, or Hajdu-Cheney syndrome is a very rare disorder characterised by short stature, progressively disappearing distal phalanges and crowded carpal bones. Failure of ossification of cranial sutures can be seen, with thickened cranial vault, absent frontal sinus, elongated sella turcica, and progressive basilar impression.