PMC9846880_01
X-ray of the chest PA view showing 5 cm cavitary infiltrate involving the superior segment of the left lower lobe.
gr1_lrg.jpg
PMC9846880_01_gr1_lrg.jpg
f0005
A chest x-ray revealed a 5 cm cavitary infiltration involving the superior segment of the left lower lobe with no previous chest x-ray for comparison (Fig. 1 ).
Computed tomography of the chest with intravenous contrast showing a thick-walled gas-filled cavitary lesion measuring 5.4 x 4.8 cm in the superior segment of the left lower lobe.
gr2_lrg.jpg
PMC9846880_01_gr2_lrg.jpg
f0010
Computed tomography (CT) scan of the chest with IV contrast (Fig. 2 ) showed a thick-walled gas-filled cavitary lesion measuring 5.4 x 4.8 cm in the superior segment of the left lower lobe.
Hematoxylin and eosin (H&E) stained sections from the left lower lobe lung biopsy. The first image is at 10x magnification, the second 2 at 20x. The first two show fibroblastic proliferation replacing the normal alveolated lung parenchyma, accompanied by hemorrhage and fibrin, consistent with organizing pneumonia. This is an etiologically nonspecific injury pattern in the lung. No granulomas were observed. Special stains for fungal, acid-fast organisms were negative, and Pneumocystis carinii bacterial colonies were not seen.
gr3_lrg.jpg
PMC9846880_01_gr3_lrg.jpg
f0015
Percutaneous CT-guided co-axial core needle biopsy was done during admission with pathology (Figs. 3 and 4 ), showing benign alveolated lung parenchyma with changes consistent with organizing pneumonia.
Preserved alveolated lung parenchyma with open-air spaces is shown in the third image for comparison.
gr4_lrg.jpg
PMC9846880_01_gr4_lrg.jpg
f0020
Percutaneous CT-guided co-axial core needle biopsy was done during admission with pathology (Figs. 3 and 4 ), showing benign alveolated lung parenchyma with changes consistent with organizing pneumonia.