Venous malformations belong to a large subgroup of vascular malformations (the most prevalent type of vascular malformations). The notion of vascular malformation (frequently confused with hemangioma) refers to congenital tumor-like vascular lesion of abnormal location. Contrary to hemangiomas, malformations do not disappear but they enlarge with the child growing. 

Venous malformations are slow-flow vascular structures without any signs of malignancy. They are composed of abnormal vascular canals which, in extreme situations, may resemble varicose veins. Venous malformations are spaghetti-like clusters of unnecessary veins. When they are under the skin thez look like a purplish mass.

What does imaging diagnostics of venous malformations consists in?

Doppler ultrasound is the first examination which may verify the background of vascular malformation. On such basis, we are able to exclude arterial component of lesion or other additional findings within this area. In the Clinic of Phlebology, prior to the treatment, we always perform the examination of choice, i.e. magnetic resonance imaging.  

In collaboration with our medical partner, i.e. 3T MRI unit in the Sports Medicine Center, we perform a comprehensive imaging diagnostics of vascular malformations, using non-contrast and post-contrast techniques.

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In rare situations, we use computed tomography (angio) and angiographic imaging.



How venous malformations are treated nowadays?

Approach to the treatment of venous parenchymal malformations is dependent on location and the risk of bleeding to an involved organ. Currently, the majority of venous malformations including those localized on extremities or intimate area are treated using the methods of interventional radiology.

In our practice, besides a broad range of spirals and embolization agents, we apply well-proven sclerotherapy. Sclerosants which are administered intravascularly under the guidance of high-resolution ultrasound in a planned and cardiovascularly justified manner are a perfect supplement. It is so called chemical embolization.


  • venous malformations belong to the most prevalent type of congenital vascular malformations
  • malformation is most frequently treated via intravenous embolization
  • if one lesion typical of venous malformation is diagnosed, then another one should be searched for; such congenital lesions occur plurally or co-exist with other disorders of vessel development. 

Our services

In the Phlebology Clinic offer you will find a full panel of venous and arterial imaging methods and the newest treatment methods of venous disorders in the whole body.