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Imaging findings and therapeutic alternatives for peripheral vascular malformations

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Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP)
Keywords
  • Malformações Vasculares
  • Embolização Terapêutica
  • Escleroterapia
  • Radiologia Intervencionista
  • Vascular Malformations
  • Therapeutic Embolization
  • Sclerotherapy
  • Interventional Radiology
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Abstract

Peripheral vascular malformations represent a spectrum of lesions that appear through the lifetime and can be found in the whole body. Such lesions are uncommon and are frequently confounded with infantile hemangioma, a common benign neoplastic lesion. In the presence of such lesions, the correlation between the clinical and radiological findings is extremely important to achieve a correct diagnosis, which will guide the best therapeutic approach. The most recent classifications for peripheral vascular malformations are based on the blood flow (low or high) and on the main vascular components (arterial, capillary, lymphatic or venous). Peripheral vascular malformations represent a diagnostic and therapeutic challenge, and complementary methods such as computed tomography, Doppler ultrasonography and magnetic resonance imaging, in association with clinical findings can provide information regarding blood flow characteristics and lesions extent. Arteriography and venography confirm the diagnosis, evaluate the lesions extent and guide the therapeutic decision making. Generally, low flow vascular malformations are percutaneously treated with sclerosing agents injection, while in high flow lesions the approach is endovascular, with permanent liquid or solid embolization agents.

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