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Craniometadiaphyseal dysplasia, wormian bone type is an extremely rare craniotubular bone dysplasia syndrome described in fewer than 10 patients to date. Clinical manifestations include macrocephaly, frontal bossing, malar hypoplasia, prominent mandible and dental hypoplasia. Other skeletal anomalies include abnormal bone modeling in tubular bones, multiple wormian bones and deformities of chest, pelvis and elbows. An increased risk of fractures is noted.
Features include: Flared metaphysis, Megalencephaly, Short stature, and Wide anterior fontanel and 25 more.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Bones and joints | 4 | Mild bone density loss (osteopenia), Broad long bones, Sideways curvature of the spine (scoliosis) |
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for craniometadiaphyseal dysplasia, wormian bone type.
3 publications have been identified in PubMed for craniometadiaphyseal dysplasia, wormian bone type. Research spans Case Report / Case Series (100%).
Kumar U (2026). [PMID: 42083422](https://pubmed.ncbi.nlm.nih.gov/42083422/). *J Genet*. [Case Report / Case Series]
Cui L (2025). [PMID: 40639871](https://pubmed.ncbi.nlm.nih.gov/40639871/). *BMJ case reports*. [Case Report / Case Series]
Morelle G (2024). [PMID: 38734477](https://pubmed.ncbi.nlm.nih.gov/38734477/). *Lancet (London, England)*. [Case Report / Case Series]
Data assembled from 5 of 12 sources · Last updated Sep 18, 2026, 11:53 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
3 |
High palate, Macrocephaly, Mandibular prognathia |
Growth and development | 1 | Short stature |
Lab test results | 1 | Elevated circulating alkaline phosphatase concentration |