**Core Concept**
The patient's symptoms - chest pain, pulmonary infiltrates, and pleural effusion - suggest a complication related to the leukemia treatment, which may involve an adverse effect on the lungs.

**Why the Correct Answer is Right**
The likely cause is Tumor Lysis Syndrome (TLS) related pulmonary complications. TLS is a condition that occurs when large numbers of cancer cells die rapidly, releasing their contents into the bloodstream. This can lead to the formation of uric acid crystals, which can cause inflammation and damage to the lungs, resulting in pulmonary infiltrates and pleural effusion.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the patient's symptoms, as it refers to a different type of pulmonary complication.
* **Option B:** This option is not correct, as it refers to a different type of cancer treatment-related complication.
* **Option C:** This option is not correct, as it refers to a different type of lung disease.

**Clinical Pearl / High-Yield Fact**
TLS is a medical emergency that requires prompt recognition and treatment. It is essential to monitor patients on chemotherapy for signs of TLS, including hyperkalemia, hyperphosphatemia, hypocalcemia, and acute kidney injury.

**Correct Answer:** D.