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A defect of the right paramedian skull base just to the lateral margin of the olfactory groove is present. Much of the right frontal sinus is opacified as are the anterior ethmoid air cells and the medial margin of the middle ethmoid air cells on the right. These findings are likely to represent a combination of the opacification and sinus mucosal thickening associated with the meningoencephalocoele.
Differentiation of the two potential pathologies is not possible. Moderate mucosal thickening is present in the maxillary sinuses and in the left anterior and middle medial ethmoidal air cells. The right ostiomeatal unit is opacified secondary to mucosal thickening and the left is barely patent. Previous turbinate surgery noted.