Developmental hereditary disorder	Dysplasia with decreased bone density	Hereditary disorder of musculoskeletal system	X-linked recessive hereditary disease
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X-linked calvarial hyperostosis (disorder)
	X-linked calvarial hyperostosis
	A rare genetic primary bone dysplasia with increased bone density disorder with characteristics of benign isolated calvarial thickening presenting with prominent frontoparietal bones, a high forehead with ridging of the metopic and sagittal sutures, lateral frontal prominences and facial dysmorphism comprising a flat nasal root and short upturned nose. Increased intracranial pressure and cranial nerve entrapment are not associated. There have been no further descriptions in the literature since 1986.

Id	782786001
Status	Primitive

Associated morphology	Dysplasia
Finding site	Bone structure
Occurrence	Congenital
Pathological process	Pathological developmental process

Has interpretation	Below reference range
Interprets	Bone density scan

DHD Diagnosis thesaurus reference set

ICD-10 complex map reference set

Target	Q75.8
Rule	TRUE
Advice	ALWAYS Q75.8
Correlation	SNOMED CT source code to target map code correlation not specified