## **Core Concept**
Radiation-induced cancer, also known as radiation carcinogenesis, refers to the development of cancer following exposure to ionizing radiation. This type of cancer can occur after a latency period that varies depending on the dose and type of radiation received. Ionizing radiation can damage the DNA in cells, leading to mutations that may result in cancer.

## **Why the Correct Answer is Right**
The correct answer, **Thyroid cancer**, is associated with radiation exposure, particularly in childhood. Ionizing radiation can cause mutations in the thyroid gland, leading to cancer. This is a well-documented risk, especially in individuals exposed to radiation at a young age, such as those who received radiation therapy to the head and neck area or those exposed to radioactive fallout.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While radiation can cause various types of cancer, **Leukaemia** is indeed a type of cancer associated with radiation exposure but saying it's the example might not be specific enough as the question seems to seek a more directly related example.
- **Option B:** There isn't enough information to assess the validity of this option directly, but it's not commonly cited as a direct example of radiation-induced cancer compared to thyroid cancer.
- **Option C:** Similarly, without specific details, it's hard to evaluate, but again, it's not as directly associated with radiation-induced cancer as thyroid cancer.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **thyroid cancer** is a well-recognized complication of radiation exposure, particularly in children. This association is crucial for patients who have undergone radiation therapy to the neck area, as it highlights the importance of long-term follow-up.

## **Correct Answer:** . Thyroid cancer