D2I2.
benign

Nasopharyngeal angiofibroma

Nasopharyngeal angiofibroma is an angiofibroma also known as juvenile nasal angiofibroma, fibromatous hamartoma, and angiofibromatous hamartoma of the nasal . It is a but locally aggressive tumor of the nasopharynx that arises from the superior margin of the sphenopalatine foramen and grows in the back of the nasal cavity. It most commonly affects adolescent males. Though it is a benign tumor, it is locally invasive and can invade the nose, cheek, orbit, or brain.

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Plain-language summary adapted from Wikipedia. Not medical advice.