Mehdi Bakhshaee - Sinus and Surgical Endoscopic Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Shervin Tavakol - Sinus and Surgical Endoscopic Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Yegane Teimouri - Department of Otorhinolaryngology, Mashhad University of Medical Sciences, Mashhad, Iran.

Introduction: Congenital vomer agenesis is an extremely rare condition in which the vomer bone does not fully develop, which can lead to septal perforation. Case Report: We report two cases with a defect in the vomer bone in the posteroinferior portion of the septum, found accidentally while performing a pre-operative CT scan for nasal obstruction evaluation. They were diagnosed with congenital vomer agenesis. Conclusion: There are afew reports of vomer agenesis in literatures. By increasing usage of sinonasal endoscopic examination,we expect to address more cases in the future.

Congenital, Endoscopic examination, Nasal septum, Vomer agenesis