This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Dehiscence of anterior wall of the external auditory canal cause infection in the parotid gland via - 
Select and explain. 
A. Fissure of santorini, B. Notch of rimus, C. Petrous fissure, D. Retropharyngeal fissure
A: Fissure of santorini
Answer: A: Fissure of santorini 
Explanation: The cartilaginous part of external auditory canal—the “fissures of santorini” through which infections can pass from external ear to parotid and vice versa.
The deficiency present in bony part is “Foramen of Huschke” seen in children up to the age of 4. Through this infections of ear can also pass to parotid gland.

Ref. Dhingra 6/e, p 2, 5/e, p4