## Core Concept
Hyperleukocytosis in acute myeloid leukemia (AML) refers to a very high white blood cell count, often above 100,000 cells/μL. This condition can lead to leukostasis, a medical emergency characterized by the sludging of leukemic cells in small blood vessels, which can cause tissue ischemia and organ dysfunction. Management involves reducing the leukemic cell burden rapidly.

## Why the Correct Answer is Right
The treatment for hyperleukocytosis in AML includes measures to rapidly decrease the white blood cell count and prevent leukostasis. This typically involves hydration, urate oxidase (e.g., rasburicase) to manage tumor lysis syndrome, and leukapheresis or exchange transfusion in severe cases to physically remove leukemic cells from the circulation. Chemotherapy is also initiated to treat the underlying leukemia.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is not provided, but typically, treatments like hydration and diuresis are recommended to help manage the metabolic complications and reduce viscosity.
- **Option B:** Similarly, this option is not provided, but measures like rasburicase for tumor lysis syndrome are standard.
- **Option D:** Not provided, but leukapheresis is a recognized emergency treatment.

## Why Option C is Incorrect (Assuming it's the Correct Answer)
- **Option C:** If option C represents a choice like "immediate initiation of high-dose chemotherapy without any cytoreduction," it might seem incorrect because while chemotherapy is crucial, immediate cytoreductive measures like leukapheresis or hydroxyurea might be needed first to rapidly decrease the white blood cell count and prevent leukostasis. However, without the actual option provided, we infer based on standard practices.

## Clinical Pearl / High-Yield Fact
A key clinical pearl is that in the setting of hyperleukocytosis due to AML, **leukapheresis** can be lifesaving and is considered an emergency procedure to rapidly reduce the circulating blast count and alleviate symptoms of leukostasis. Another important point is to monitor for **tumor lysis syndrome** and manage it aggressively with hydration, allopurinol or rasburicase, and sometimes hemodialysis.

## Correct Answer: C.