Canalis basalis medianus with cerebrospinal fluid leak: rare presentation and literature review.

Canalis Basalis Medianus is a rare congenital normal anatomically variant of the clivus .We report a very rare case of cerebrospinal fluid leak from a canalis basilaris medianus in a 22-year-old male, who presented to our hospital with frontal headache and running nose two weeks after an elective septoplasty.