Melorheostosis with osteopoikilosis

Title

Other Names:

MSBD syndrome; Mixed sclerosing bone dystrophy

Categories:

Congenital and Genetic Diseases; Connective tissue diseases; Musculoskeletal Diseases

Summary Summary

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.

Orpha Number: 1879

Definition

Melorheostosis with osteopoikilosis is a rare sclerosing bone dysplasia, combining the clinical and radiological features of melorheostosis and osteopoikilosis (see these terms), that has been reported in some families with osteopoikilosis and that is characterized by a variable presentation of limb pain and deformities.

Epidemiology

Less than 5 families have been reported in the literature to date.

Clinical description

As osteopoikilosis is a benign, usually asymptomatic condition, the clinical signs are primarily those of melorheostosis that can manifest with joint contractures, pain, stiffness, limited joint functions, limb-length discrepancy and deformity.

Etiology

The combination of melorheostosis with osteopoikilosis may be an unusual complication of familial osteopoikilosis. Osteopoikilosis is caused by a germline mutation in the LEMD3 gene (12q14). A germline mutation in the LEMD3 gene may predispose individuals with osteopoikilosis to develop melorheostosis. However, the exact pathogenesis is currently unknown.

Genetic counseling

Osteopoikilosis is inherited autosomal dominantly. There are no reports of parent to child transmission of melorheostosis. Genetic counseling is possible.

Visit the Orphanet disease page for more resources.

Last updated: 11/1/2014

Symptoms Symptoms

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms	Other Names	Learn More: HPO ID
80%-99% of people have these symptoms
Abnormal cortical bone morphology		0003103
Complete duplication of the distal phalanges of the hand	Complete duplication of the outermost bones of the hand	0010001
Osteopoikilosis		0010739
5%-29% of people have these symptoms
Hypertension		0000822
Multiple lipomas	Multiple fatty lumps	0001012
Subcutaneous nodule	Firm lump under the skin Growth of abnormal tissue under the skin [ more ]	0001482

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Last updated: 2/1/2021

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Learn More Learn More

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
PubMed is a searchable database of medical literature and lists journal articles that discuss Melorheostosis with osteopoikilosis. Click on the link to view a sample search on this topic.

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