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Wednesday27 October 2021

Classification of vascular anomalies

The International Society for the Study of Vascular Anomalies (ISSVA) was founded 1992 and serves as a ”world organization” that promotes interdisciplinary and international collaborations. The goal of ISSVA is to improve the understanding and management of vascular malformations. ISSVA organizes a workshop every two years in various countries around the world. An important issue for ISSVA has been to develop a unifying classification of vascular anomalies that provides a common language. The first classification was adopted by the ISSVA during its 1996 workshop. The latest classification was presented at the meeting in Melbourne 2014 and the full classification can be found at the home page of ISSVA (www.issva.org).

A simplified classification with examples of vascular tumors:

Vascular tumors


                 Infantile hemangioma

         Locally aggressive

                 Kaposiform hemangioendothelioma



Vascular malformations

         Slow flow

                 Capillary malformations (CM)

                 Venous malformations (VM)

                 Lymphatic malformations (LM)

         High flow

                 Arteriovenous malformations (AVM)

         Combined syndromes

                  CVM, CLM, LVM, CLVM, CAVM, CLAVM