[Classification of vascular tumors and malformations: basis for classification and clinical purpose]

Area of Science:

• Vascular biology and pathology
• Medical diagnostics and imaging
• Histopathology

Context:

• Vascular anomalies present diagnostic challenges due to inconsistent terminology.
• The International Society for the Study of Vascular Anomalies (ISSVA) established a unified classification system.
• This system is crucial for standardizing research and clinical practice.

Purpose:

• To introduce and explain the ISSVA classification of vascular anomalies.
• To differentiate between vascular tumors and vascular malformations.
• To highlight the clinical, radiological, hemodynamic, and histological basis of the classification.

Summary:

• Vascular anomalies are categorized into vascular tumors (proliferation, e.g., hemangiomas) and vascular malformations (morphologic vessel anomalies).
• Vascular malformations are further classified by vessel type: capillary, venous, lymphatic, and arteriovenous.
• The classification provides a common scientific language for these conditions.

Impact:

• Facilitates a standardized approach to radiological examination and treatment planning.
• Improves interdisciplinary communication and collaboration in managing vascular anomalies.
• Aids in advancing research and understanding of vascular tumor and malformation pathogenesis.