Staging systems for Juvenile Nasopharyngeal Angiofibroma

Juvenile nasopharyngeal angiofibroma (JNA) is an uncommon, slow-growing, benign but locally invasive vascular tumor arising from tissues in the sphenopalatine foramen inside the nasal cavity. JNAs are also reported to arise from the posterior aspect of the middle turbinate and rarely from other sites of the nasal cavity and in paranasal sinuses. JNA tumor was