שאלה משלב א׳ בא.א.ג וכירורגיה של ראש וצוואר · מועד 2024 (מאי), שאלה 32

A nasal dermoid may be associated with an ENLARGED FORAMEN CAECUM (with a bifid or widened crista galli), the radiological clue to an intracranial extension along the embryological tract - which is why MRI or CT is mandatory before excision, and why a midline nasal pit, cyst or fistula should never simply be excised in clinic. Choanal atresia, a megaincisor (a marker of holoprosencephaly and of midline nasal pyriform aperture stenosis) and nasal haemangioma are separate entities.