Orphanet: Multiple osteochondromas

Search for a rare disease

* (*) mandatory field

Other search option(s)

Suggest an update

(*) Required fields.


Only comments seeking to improve the quality and accuracy of information on the Orphanet website are accepted. For all other comments, please send your remarks via contact us. Only comments written in English can be processed.

Captcha image

Multiple osteochondromas

Disease definition

Multiple osteochondromas (MO) is characterised by development of two or more cartilage capped bony outgrowths (osteochondromas) of the long bones.


Classification level: Disorder
  • Synonym(s):
    • Bessel-Hagen disease
    • Multiple cartilaginous exostoses
  • Prevalence: 1-9 / 100 000
  • Inheritance: Autosomal dominant 
  • Age of onset: Childhood
  • ICD-10: Q78.6
  • OMIM: 133700  133701  600209
  • UMLS: C0015306  C0206641
  • MeSH: -
  • GARD: 7035
  • MedDRA: -

Detailed information

Article for general public


The documents contained in this web site are presented for information purposes only. The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.