<unk>  is a set of<unk> -like symptoms that occur with no sign of infection in the lung.<unk>  is a serious condition that can occur after a stem cell transplant. It occurs between 2.2 and 15 percent of hematopoietic stem cell transplants. The incubation period ranges between 4 and 106 days, but mostly is about 22 days from transplant.
Idiopathic pneumonia syndrome
Community-acquired pneumonia
Hantavirus pulmonary syndrome
Fungal pneumonia
Hospital-acquired pneumonia
Bacterial pneumonia
Viral pneumonia
Atypical pneumonia