Image Library

Image 23a
Subacute Hypersensitivity Pneumonitis
Subacute Hypersensitivity Pneumonitis
This classic example of "cellular interstitial pneumonia" has increased chronic inflammation involving most of the alveolar septa (arrows on representative areas), producing a blue appearance to the slide overall. A normal alveolar wall is circled for comparison. At this magnification, this pattern reasonably could be called "nonspecific interstitial pneumonia," but a careful search for other features (such as granulomas) and a complete history are required (for example, this would be compatible with acute cellular rejection if this were a transplanted lung). Click here for higher magnification.

<< back to gallery