**4. Etiopathogenesis**

Juvenile Nasopharyngeal Angiofibroma occurs almost exclusively in males and that too in adolescent period. Mean age of presentation is 14 years (range 7 years to 19 years) [10]. Isolated cases of JNAs in females or in younger/ older ages have been reported in literature [4, 11]. Exact etiology, although unknown, evidences point towards a hormonal influence on its occurrence and growth.
