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Start free with EleplanAxial mesodermal dysplasia spectrum
ORPHA:1834Malformation syndrome
Also called Blastogenesis defect · Russell-Weaver-Bull syndrome
What it is
Axial mesodermal dysplasia spectrum is a rare developmental defect during embryogenesis syndrome characterized by congenital manifestations of both oculo-auriculo-vertebral spectrum and caudal regression sequence. Phenotype is highly variable but patients typically present facial dysmorphism (incl. asymmetry, hypertelorism), auricular abnormalities (e.g. preauricular tags, microtia, absence of middle ear ossicles), skeletal malformations (hemivertebrae, hip dislocation, sacral agenesis/dysplasia, talipes equinovarus, flexion deformity of lower limbs), cardiac defects (dextrocardia, septal defects), renal and genitourinary anomalies (such as renal agensis/dysplasia, abnormal external genitalia, cryptorchidia), as well as anal anomalies such as anal atresia and rectovesical fistula.
Key facts
- Age of onset
- Antenatal
- Classified as
- Malformation syndrome
Signs and symptoms
Very common80–99%
37- Abnormal form of the vertebral bodies
- Abnormal intestine morphology
- Abnormality of pelvic girdle bone morphology
- Abnormality of the genital system
- Abnormality of the knee
- Abnormality of the liver
- Abnormality of the skeletal system
- Abnormality of the spleen
- Abnormality of the ureter
- Abnormality of the urinary system
- Abnormal morphology of female internal genitalia
- Abnormal rib morphology
- Anal atresia
- Anorectal anomaly
- Aplasia/Hypoplasia of the lungs
- Cerebral cortical atrophy
- Congenital diaphragmatic hernia
- Facial asymmetry
- Gastroesophageal reflux
- Gingival overgrowth
- Hydrocephalus
- Hypertelorism
- Limbal dermoid
- Micrognathia
- Microtia
- Missing ribs
- Morphological abnormality of the gastrointestinal tract
- Oligohydramnios
- Omphalocele
- Preauricular skin tag
- Premature birth
- Renal cyst
- Renal hypoplasia/aplasia
- Scoliosis
- Short neck
- Short stature
- Vertebral segmentation defect
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.
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
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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