May Be Caused by

 Common

Angioinvasive aspergillosis

Bacterial pneumonia

Candidiasis

Cryptococcosis

Fungal disease

Histoplasmosis

Leukemic infiltration

Lymphomatous infiltration

Zygomycosis

 Uncommon

Alveolar proteinosis

Cytomegalovirus pneumonia

Drug reaction

Heart failure

Leukemia cell lysis

Leukostasis

Methotrexate

Parasitic disease

Pulmonary edema

Pulmonary hemorrhage

Strongyloidiasis

Varicella pneumonia