Hajdu–Cheney syndrome: A rare acro-osteolytic disorder
The present case has been reported in the West African Journal of Radiology. The authors report a case of a 35-year-old woman with Hajdu–Cheney syndrome (HCS), a very rare connective tissue disorder with about 70 cases reported worldwide.

The main clinical features of HCS include short stature, scoliosis and kyphosis, elongation of the skull, small chin, clubbing of fingers, coarse hair, and thick eyebrows. They may also have micrognathia, premature loss of teeth, low set ears, and short web neck.

The patient presented with clinical features of the syndrome and left seventh cranial nerve palsy after several dental procedures. The radiographs of the skull and the hands demonstrated the abnormalities clearly.

Lateral radiograph of the skull revealed multiple Wormian bones in the lambdoid suture. There was delayed closure of the coronal and metopic sutures and prominence of the occipital bone. There was platybasia, but no basilar invagination seen.

The frontal sinus was not pneumatized, and the maxillary sinuses were hypoplastic. Multiple losses of the upper and lower teeth were noted, and two teeth were noted on the maxilla and the mandible. Radiograph of the right hand demonstrated a transverse band of osteolysis involving the distal phalanges of the thumb, second, third, and fifth fingers.

Radiograph of the left hand showed an osteolytic band involving the distal phalanx of the thumb and the distal phalanges of the second, third, and fifth fingers. Based on clinical and radiological findings, the patient was diagnosed to have HCS with facial nerve palsy.

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