idiopathic pneumonia syndrome

Meaning of idiopathic pneumonia syndrome: A set of pneumonia-like symptoms (such as fever, chills, coughing, and breathing problems) that occur with no sign of infection in the lung.

Definition of idiopathic pneumonia syndrome

A set of pneumonia-like symptoms (such as fever, chills, coughing, and breathing problems) that occur with no sign of infection in the lung. Idiopathic pneumonia syndrome is a serious condition that can occur after a stem cell transplant.