Histology Course S IV 9 Department of Pathology, University of Zurich Histokurs

S IV 9 infant respiratory distress syndrom PAS further information (German) on HiPaKu
  ICD-10: P22.0
 
 

 
Premature neonate (week 36 of gestation), 3 days old, respiratory failure, autopsy specimen.

- Lung of a newborn
- Atelectatic and aeriferous, occasionally hyperinflated areas next to each other
- In the non-inflated areas of the lung, the alveolar walls are stacked (DD: inflammatory infiltrate)
- The unfolded air-filled alveoli, some of which hyperinflated, contain PAS-positive hyaline membranes, which line the alveolar walls like wallpaper.