Radial ray hypoplasia-choanal atresia syndrome

What it is

A rare nose and cavum anomaly characterized by variable defects of the radial ray, concurrent choanal malformations and esotropia. Patients predominantly present with left radial ray hypoplasia, however the spectrum of radial ray involvement may range from totally absent radius, first metacarpal, and phalangeal bones to hypoplastic carpal and metacarpal bones and a triphalangeal thumb. There have been no further descriptions in the literature since 1987.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Infancy, Neonatal

Inheritance

Autosomal dominant

Classified as

Malformation syndrome

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references