## **Core Concept**
Dohlman's operation is a medical procedure related to otolaryngology, specifically for treating a condition affecting the **Eustachian tube** or **middle ear**. This procedure is often associated with **tympanostomy** or management of **otitis media with effusion**.

## **Why the Correct Answer is Right**
Dohlman's operation involves the use of a **tube or catheter** inserted through the tympanic membrane (eardrum) to ventilate the middle ear. The primary goal is to **equalize the air pressure** in the middle ear with the atmospheric pressure, thereby facilitating the drainage of fluid from the middle ear. This procedure is particularly beneficial for patients suffering from **chronic otitis media with effusion** or **recurrent acute otitis media**. The operation helps in restoring hearing and alleviating symptoms such as ear fullness.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because Dohlman's operation is not primarily used for conditions like **tonsillitis** or **adenoiditis**, which are managed through different surgical interventions such as **tonsillectomy** and **adenoidectomy**.
- **Option B:** This option is incorrect as Dohlman's operation does not directly address **nasal septum deviations**, which are corrected through a **septoplasty**.
- **Option C:** Although not directly provided, if this option relates to another otolaryngological condition not specifically treated by Dohlman's operation, it would be incorrect based on the same rationale.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that Dohlman's operation is specifically indicated for conditions like **otitis media with effusion**, where **tympanostomy tubes** are placed to ventilate the middle ear. A notable clinical correlation is that these patients often present with **hearing loss** or **ear fullness**, and the procedure significantly improves these symptoms.

## **Correct Answer:** C. Dohlman's procedure.