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Juvenile Nasopharyngeal Angiofibroma
Etiology: benign but aggressive vascular tumor
Imaging: arises from fibrovascular stroma on posterolateral nasal wall adjacent to sphenopalatine foramen and extends into pterygopalatine fossa to masticator space, extends intracranially via pterygopalatine fossa, supplied usually by external carotid artery
Clinical: adolescent male with epistaxis
Cases of Juvenile Nasopharyngeal Angiofibroma
Axial CT without contrast of the face (above) shows a large left sided sinonasal soft tissue mass. Early (below left) and later (below right) lateral images from a carotid angiogram show the mass to be hypervascular.