**Question:** Surgical treatment of parotid tumor involving the deep lobe is -

A. Facial nerve decompression
B. Superficial lobe excision
C. Total parotidectomy
D. Transparotid approach

**Core Concept:**
Surgical treatment of parotid tumors, particularly when they involve the deep lobe, requires careful consideration of the various surgical techniques to minimize complications and achieve optimal outcomes. The parotid gland is a major salivary gland located in the region of the cheek, and it has two lobes: the superficial lobe and the deep lobe.

**Why the Correct Answer is Right:**
The correct answer, **C. Total parotidectomy**, is chosen because it ensures the complete removal of the tumor, including the involved deep lobe. This procedure involves dissection and excision of both the superficial and deep lobes of the parotid gland, along with the surrounding lymph nodes and any tumor tissue. By removing the entire gland, the risk of recurrence is minimized.

**Why Each Wrong Option is Incorrect:**

A. Facial nerve decompression: This technique aims to relieve pressure on the facial nerve, which runs through the parotid gland. While important in certain cases, it is not the primary surgical approach for deep lobe tumors and does not address the tumor itself.

B. Superficial lobe excision: This option only addresses the superficial lobe, leaving the deep lobe involved with the tumor intact, increasing the risk of tumor recurrence.

D. Transparotid approach: This surgical technique is not commonly used for parotid gland tumors, especially when the tumor involves the deep lobe. It carries a higher risk of complications, such as facial nerve injury and salivary fistula formation, as compared to a total parotidectomy.

**Clinical Pearl:**
When treating parotid gland tumors involving the deep lobe, the most suitable surgical approach is **C. Total parotidectomy**. This comprehensive procedure ensures complete removal of the tumor, reducing the risk of recurrence. Moreover, it is essential to carefully evaluate and preserve facial nerve function during surgery, as facial nerve dysfunction is a common complication after parotidectomy. In experienced hands, facial nerve preservation is possible in the majority of cases.