Dehiscence of anterior wall of the external auditory canal cause infection in the parotid gland via –
**Core Concept**
The question tests knowledge of the anatomical relationship between the external auditory canal and surrounding structures, specifically the pathway of infection spread. Understanding of **temporal bone anatomy** and **spread of infection** is crucial.
**Why the Correct Answer is Right**
Dehiscence of the anterior wall of the external auditory canal can lead to infection spreading to the parotid gland through a specific pathway. The correct answer involves the **fissures of Santorini**, which are small openings in the anterior wall of the external auditory canal that can provide a route for infection to spread from the canal to the parotid gland.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the pathway of infection spread from the external auditory canal to the parotid gland.
**Option B:** This option is also incorrect as it is not related to the anatomical pathway of infection spread.
**Option C:** Similarly, this option is incorrect as it does not correctly identify the pathway.
**Why Each Wrong Option is Incorrect (Continued)**
**Option D:** This option is incorrect because the correct pathway involves a specific anatomical structure that allows infection to spread from the external auditory canal to the parotid gland.
**Clinical Pearl / High-Yield Fact**
Infection of the parotid gland can occur through various pathways, but understanding the role of **anatomical defects** such as dehiscence of the external auditory canal is crucial for diagnosis and management.
**Correct Answer:** Correct Answer: B. fissures of Santorini.