## **Core Concept**
The question describes a 7-year-old child with symptoms suggestive of a brain tumor, including prolonged fever, early morning headache, vomiting, and focal neurological deficits. The presence of focal neurological deficits and symptoms such as morning headache and vomiting point towards increased intracranial pressure, a common presentation in pediatric brain tumors.

## **Why the Correct Answer is Right**
The symptoms and CT scan findings are highly suggestive of a brain tumor. Among the common pediatric brain tumors, **medulloblastoma** is a notable example that presents with increased intracranial pressure symptoms (headache, vomiting) and sometimes focal neurological deficits. The management of medulloblastoma typically involves **surgery** as the initial step, often followed by chemotherapy and/or radiation therapy. The correct answer, therefore, aligns with the initial management approach for a brain tumor, which is surgical intervention to obtain a histopathological diagnosis and reduce tumor burden.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, while chemotherapy and radiation therapy are part of the treatment plan for many brain tumors, they are not typically the first line of management.
- **Option B:** This option might be considered in certain cases of increased intracranial pressure or for symptom palliation but does not address the underlying cause, which is the tumor itself.
- **Option C:** Similar to Option A, this might be part of the overall management plan but not the immediate next step following diagnosis.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that in pediatric patients, **medulloblastoma** is a common posterior fossa tumor presenting with obstructive hydrocephalus symptoms (headache, nausea, vomiting) and ataxia. Early morning headaches and projectile vomiting are classic signs of increased intracranial pressure.

## **Correct Answer:** . **Surgery**