"Fossa navicularis magna, or sometimes simply fossa navicularis, is a variant depression on the ventral/inferior surface of the basioccipital portion of the clivus. It is a notch-like or rounded defect upon which the smaller pharyngeal fossa (foveola pharyngica) is superimposed 1. The prevalence is 1–8% 1,2."
Expected headings
"Related pathology"