PAP is a syndrome (clinical condition) in which surfactant, a
milky substance normally present in the lungs, accumulates to abnormally high levels and causes a feeling of breathlessness.
Pulmonary Alveolar Proteinosis, commonly known by the acronym PAP, is a rare lung disease characterized by the build-up of grainy material in the alveoli (air sacs) of the lungs. -
http://www.papfoundation.org/About PAP.htm
Proteinoza pęcherzyków płucnych (łac. proteinosis alveolorum, ang. pulmonary alveolar proteinosis, PAP) -
http://pl.wikipedia.org/wiki/Proteinoza_pęcherzyków_płucnych
The translation workplace 
