Respiratory System

Medium-power detail of lung to demonstrate the accumulation of large numbers of mononuclear cells within the alveolar spaces with only mild fibrous thickening of the alveolar walls.
Desquamative interstitial pneumonia (DIP)

Desquamative interstitial pneumonia (DIP)

Accumulation of large numbers of mononuclear cells within the alveolar spaces with only mild fibrous thickening of the alveolar walls.