## Core Concept
Immunoguided surgery, also known as targeted therapy or immunotherapy-guided surgery, involves using specific antibodies or immune system components to target and identify cancer cells or specific tissues during surgical procedures. This technique is particularly useful in oncological surgeries where precise removal of tumor tissues is critical.

## Why the Correct Answer is Right
The correct answer, Sentinel lymph node biopsy in breast cancer, is a prime example of immunoguided surgery. In this procedure, a radioactive substance or a dye (which can be considered an immunoguided agent) is injected near the tumor site. The sentinel lymph node, which is the first lymph node to which cancer cells are likely to spread from a primary tumor, can then be identified using a special probe or by visually detecting the dye. This technique helps surgeons determine if the cancer has spread to the lymph nodes, thereby guiding the extent of surgery required.

## Why Each Wrong Option is Incorrect
- **Option A:** While intraoperative frozen section analysis is a valuable tool in surgical oncology, it does not specifically involve immunoguided techniques. Instead, it relies on pathological examination of tissue sections during surgery.
- **Option B:** Mohs surgery is a precise surgical technique used primarily for skin cancers. Although it involves microscopic examination of tissue margins, it is not typically classified under immunoguided surgery.
- **Option C:** Oncocytic lesions might require surgical intervention, but the term does not specifically relate to the use of immunoguided techniques during surgery.

## Clinical Pearl / High-Yield Fact
A key clinical pearl is that immunoguided surgery, such as sentinel lymph node biopsy, has significantly improved the management of various cancers, including breast cancer, melanoma, and certain types of gastrointestinal cancers. It allows for more targeted and less invasive surgical procedures, reducing morbidity and improving outcomes.

## Correct Answer Line
**Correct Answer: D. Sentinel lymph node biopsy in breast cancer.**