The Hajdu-Cheney syndrome. A review of the literature and report of 3 cases.

The Hajdu-Cheney syndrome or acro-osteolysis syndrome is a rare disease. Only 18 well-documented cases are described in the literature. Presentation of cases in the oral surgical literature is rare. The syndrome is characterized by dissolution of terminal phalanges of the hands and feet, dolichocephaly, open cranial sutures, multiple wormian bones, absence of frontal sinuses, wide open sella turcica, progressive basilar invagination, early loss of teeth, short stature and characteristic facies. Inheritance is most likely autosomal dominant. 3 patients are presented, 2 of them are mother and son, the latter (case 2) being the youngest patient reported to date. The parents of the 3rd patient were consanguineous, raising the possibility of genetic heterogeneity. Dental, surgical and genetic aspects are discussed.