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Figure 1. Chest radiograph obtained at age 15 months shows nonhomogeneous pulmonary opacity with irregular borders on the right side.
Figure 2. Thoracic computed tomographic scan with contrast medium shows multiple air-filled cystic lesions of various sizes and increased right lung volume.
Figure 3. A low-power photomicrograph shows bronchiolarlike multiple cystic structures lined with columnar epithelium in the pulmonary parenchyma (hematoxylin-eosin, original magnification ×32).
Figure 4. A high-power photomicrograph shows multiple cystic structures lined by ciliated columnar epithelium, surrounded by smooth muscle and scattered cartilage tissue and interstitial lymphocytic infiltrations (hematoxylin-eosin, original magnification ×125).
Figure 5. A chest radiograph shows no pathological findings 1 year after surgical resection.
Pathological Case of the Month. Arch Pediatr Adolesc Med. 2000;154(6):634. doi:
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