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Abstract
Background: Juvenile nasopharyngeal angiofibroma is a rare, slowly growing, locally aggressive highly vascular neoplasm and represents approximately 0.5% of all head and neck tumors. Despite many researches, there is still a lot of debate regards the origin and routes of extension of JNA. Results: Sphenopalatine foramen was affected in all patients i.e.100%. Medial and inferior extensions by the tumor were present in all patients i.e.100%. Conclusion: It seems that nasopharyngeal angiofibroma follows very strict growth pattern beginning by medial and inferior growth to posterior nose and nasopharynx then medial and superior growth to the sphenoid sinus then lateral growth to pterygopalatine fossa and infratemporal fossa then to the orbit and/or to the cranial cavity