Pulmonary Alveolar Microlithiasis: A Unique Case of Familial PAM Complicated by Transplant Rejection

Figure 2

Histologic examination of explanted lung tissue. (a) 4x H&E sections of bilateral lung parenchyma demonstrated similar findings consisting of numerous microliths filling alveolar spaces, diffuse interstitial fibrosis, and focal osseous metaplasia. (b) 10x higher magnification showing the characteristic concentric calcification of the microliths and focal osseous metaplasia.

(a)

(b)