Congenital vomeral bone defect: report of two cases and a review of the literature.

Nasal septum perforations or defects can have a variety of causes. Defects of the septum tend to occur in the antero-inferior region. We report two cases of congenital vomeral defect of the septum detected during nasal endoscopy. Neither of the patients in this report had any nasal surgery, trauma, infectious disease, or drug abuse. Our findings suggest that a developmental abnormality of the vomer during the prenatal period resulted in congenital defects of the vomer. Congenital defects of the nasal septum should be added to the etiology of septal perforation and defect.