Set of rare diseases.
A group of rare vascular conditions caused by the compression of blood vessels or organs in different locations that reduce venous return, impeding the affected organs to function properly.
The blood vessels are blocked by other vessels or structures, which causes a limited circulation of blood to a body part. The compression of a given structure by veins or arteries may also take place, such as in the Superior Mesenteric Artery Syndrome (SMAS), where two arteries compress the duodenum.
Pain
Nausea
Vomiting
Diarrhea
Constipation
Urological problems
Weight loss
Blurred vision
Dizziness
Tachycardia
Shortness of breath
Neurological symptoms