**Core Concept**
The management of incidentally found adrenal masses requires a careful consideration of the risk of malignancy and the potential consequences of surgery. The primary goal is to distinguish between benign and malignant lesions, with a focus on identifying features that suggest a high risk of malignancy.

**Why the Correct Answer is Right**
Incidentally found adrenal masses are common, with a prevalence of approximately 4-10% in the general population. The risk of malignancy is low, estimated to be around 3-5%. However, certain features on imaging and laboratory tests can increase the suspicion of malignancy. For example, a mass with irregular margins, heterogeneous enhancement, or evidence of invasion into adjacent structures is more likely to be malignant. Furthermore, elevated levels of catecholamines, aldosterone, or cortisol can indicate functional adrenal tumors.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, but in general, adrenal masses are not typically managed with immediate surgery without further evaluation.
* **Option B:** This option is not provided, but in general, adrenal masses are not typically managed with radiation therapy without further evaluation.
* **Option C:** This option is not provided, but in general, adrenal masses are not typically managed with chemotherapy without further evaluation.
* **Option D:** This option is not provided, but in general, adrenal masses are not typically managed with biopsy without further evaluation.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the majority of incidentally found adrenal masses are non-functional and benign. However, a small percentage may be malignant, and a thorough evaluation, including imaging and laboratory tests, is necessary to determine the risk of malignancy and guide management.

**Correct Answer: A.**