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Inicio Radiología La TC en el diagnóstico de las fístulas arteriovenosas pulmonares. A propósit...
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Vol. 44. Issue 3.
Pages 125-128 (January 2002)
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Vol. 44. Issue 3.
Pages 125-128 (January 2002)
La TC en el diagnóstico de las fístulas arteriovenosas pulmonares. A propósito de dos casos*
Computed tomography in the diagnosis of pulmonary arteriovenous fistulae: a report of two cases
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Carmen Cuesta López, Covadonga del Blanco Martínez*, Ana Montes García, Belinda Fernández Mariño
Servicio de Radiodiagnóstico. Hospital General de Asturias. Oviedo
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La mayoría de los pacientes con Fístula Arteriovenosa Pulmonar (FAVP) no se reconocen clínicamente hasta que son adultos. Los sínto-mas, si ocurren, pueden no ser específicos, encontrándose hemoptisis, epíxtasis y saturaciones bajas de oxígeno entre otros. En la radiografía simple aparecen como una masa redondeada u oval, lobulada y de den-sidad uniforme; muchas veces permite el diagnóstico, ya que son visibles los vasos arterial y venoso. La TC helicoidal con contraste o la an-gio-RM son ideales para la evaluación preterapéutica, identificándose la arteria nutriente desde el hilio pulmonar y la vena de drenaje hacia la aurícula izquierda. Con la embolización mediante catéter con coils, se obtienen excelentes resultados.

Palabras clave:
Fístulas arteriovenosas pulmonares
Telangiectasia Hemorrágica Hereditaria
TC helicoidal
RM

Pulmonary arteriovenous fistula is not clinically recognized until the patient reaches adulthood in most cases. The symptoms, when present, may not be specific, and include hemoptysis, epistaxis and low oxygen saturation, among others. Plain radiography shows a round or oval lobulated mass of uniform density, an image that is often diagnostic since the arterial and venous vessels are visible. Contrast-enhanced helical computed tomography and magnetic resonance angiography are ideal techniques for pretreatment evaluation, showing the nutrient artery from the lung hilum and the draining vein toward left atrium. Excellent results are obtained with coil embolization.

Key words:
Pulmonary arteriovenous fistula
Hereditary hemorrhagic telangiectasia
Helical computed tomography
Magnetic resonances imaging

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