Dehiscence in the external auditory canal cause infection in the parotid gland via:: (A) Fissure of Santorini, (B) Notch of Rivinus, (C) Petro-tympanic fissure, (D) Retro pharyngeal fissure
Answer is A. (a) Fissure of Santorini(Ref. Cummings, 6th ed., 1981)The notch of Rivinus is the upper attachment of pars flaccida.Petro-tympanic fissure is present on the anterior wall of middle ear, on which attaches the anterior malleolar ligament.Retropharyngeal fissure does not exist.