**Question:** Treatment of choice for Wahin's tumor is:

A. Radiotherapy
B. Surgery
C. Chemotherapy
D. Hormonal therapy

**Core Concept:**
Wahin's tumor, also known as hemangiopericytoma, is a rare, slow-growing, and locally aggressive soft tissue sarcoma that occurs in adults, typically affecting the extremities, trunk, or head and neck. These tumors have a high propensity for local recurrence and distant spread, which makes treatment challenging.

**Why the Correct Answer is Right:**
The correct answer is **B. Surgery**. Surgery aims to remove the tumor completely, which is essential for achieving long-term local control and preventing recurrence. Radiotherapy may provide palliation and local control, but it is less effective in achieving complete tumor removal. Hormonal therapy (D) is not targeted at this specific tumor type, and chemotherapy (C) is less effective due to the tumor's slow-growing nature and rich blood supply.

**Why Each Wrong Option is Incorrect:**
A. Radiotherapy is used to control local growth and pain, but its effectiveness in achieving complete tumor removal is limited.
B. Hormonal therapy (D) is not specific for hemangiopericytomas, making it a wrong choice.
C. Chemotherapy (C) is less effective in treating Wahin's tumor due to its slow growth and rich blood supply, which allows the tumor to evade the cytotoxic effects of chemotherapy drugs.

**Clinical Pearl:**
In cases of Wahin's tumor, complete surgical excision is the gold standard for achieving long-term local control, preventing recurrence, and improving overall prognosis. While adjuvant therapy like radiotherapy, chemotherapy, or hormonal therapy may be considered in selected cases, surgery remains the primary modality for optimal management of this tumor type.