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Start free with EleplanMiddle aortic syndrome
ORPHA:1456Morphological anomaly
Also called Abdominal coarctation · Coarctation of the abdominal aorta · MAC · Mid-aortic dysplastic syndrome · Mid-aortic syndrome · Midaortic syndrome · Middle aortic coarctation
What it is
A rare vascular anomaly characterized by the segmental narrowing of the abdominal and/or distal descending thoracic aorta, with varying involvement of the visceral and renal arteries, that commonly presents in children and young adults with early onset and refractory hypertension, abdominal angina, and lower-limb claudication, that can lead to life-threatening complications associated with severe hypertension (i.e. myocardial infarction, heart failure, aortic rupture, renal insufficiency and intracranial hemorrhage). It may be due to various congenital or acquired causes, but it is most often secondary to an acquired inflammatory disease (i.e. Takayasu arteritis or giant cell arteritis).
Key facts
- Prevalence
- <1 / 1 000 000 (Europe)
- Age of onset
- Childhood
- Inheritance
- Not applicable
- Classified as
- Morphological anomaly
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
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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