Fibrochondrogenesis

What it is

A rare, rhizo-mesomelic dysplasia characterized by distinct facial features (flat midface, flat small nose, anteverted nares, low set ears, protuberant eyes, and small mouth with long upper lip), markedly short limbs with relatively normal hands and feet, short ribs with broad metaphyses and small bell-shaped thorax with protuberant abdomen. Vertebral bodies are flat, creating a distinctive pinched appearance in lateral radiographic views. Cleft palate, micrognathia, bifid tongue and brachyclinodactyly with some soft tissue syndactyly have been reported in few patients. It is mostly a neonatally lethal condition. Affected individuals who survive the neonatal period persents with severe global developmental delay, severe skeletal dysplasia, high myopia and mild to moderate hearing loss.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Neonatal

Inheritance

Autosomal dominant, Autosomal recessive

Classified as

Disease

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.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Genes

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