Histologic Changes of Postmortem Lung

A

These two photos are representative of most of the lung parenchyma. What has happened since the lung biopsy was taken? Which photo appears abnormal? What are the abnormalities? How do you account for lung weights that were more than double normal?

Answers

B

Clinical summaryImage 6

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Answers

A

These two photos are representative of most of the lung parenchyma. What has happened since the lung biopsy was taken? The organizing interstitial pneumonia has resolved.

Which photo appears abnormal? B is abnormal.

B

What are the abnormalities? B shows focal collapse and overdistension of alveoli, both of which distort the architecture. Most airways (bottom edge) were unremarkable, and vessels (not shown) were normal.

How do you account for lung weights that were more than double normal? The increased weight is from edema, which is transudative, in the interstitium and air spaces. It cannot be seen in the sections because it has insufficient protein to stain with the eosin stain.

Clinical summaryImage 6

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