Juvenile angiofibroma, in a 16-year-old male

A large, intensely enhancing, mass lesion is seen within the left nasal cavity posteriorly which extends to fill the sphenoid sinus. There is bone destruction and remodeling on CT. The blood supply was predominantly from the external carotid artery, specifically from branches of the internal maxillary artery and ascending pharyngeal artery. On DSA there is an intense capillary blush, with enlarged feeding branches demonstrated from the external carotid artery.

Juvenile angiofibroma (16 year old male)

Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)