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Nasopharyngeal angiofibroma (also called juvenile nasopharyngeal angiofibroma) is a histologically benign but locally aggressive vascular tumor that grows in the back of the nasal cavity. It most commonly affects adolescent males. Patients with nasopharyngeal angiofibroma usually present with one-sided nasal obstruction and recurrent bleeding. ==Signs and symptoms== * Frequent chronic epistaxis or blood-tinged nasal discharge * Nasal obstruction and rhinorrhea * facial dysmorphism ( when locally invasive) * Conductive hearing loss from eustachian-tube obstruction * Diplopia, which occurs secondary to erosion into superior orbital fissure and due to third and sixth nerve palsy, * proptosis when having intraorbital extension. * Rarely anosmia, recurrent otitis media, and eye pain. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nasopharyngeal angiofibroma」の詳細全文を読む スポンサード リンク
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