PMC6395121_01
A chest radiograph taken three years prior to presentation shows dense infiltrate in the right lower lung fields (A), and consolidation with bronchial dilatation in the right lower lobes (E) was confirmed on thoracic computed tomography (CT). One year later, the consolidation progressed (B), and a 2-cm cystic lesion had appeared (F). Chest radiography and thoracic CT obtained 1 year prior to visiting our hospital showed expansion of the cyst to 4 cm in size (C, G). Chest radiograph taken on the first visit to our hospital demonstrated a 7-cm cyst in the right hemithorax (D) that was found to occupy the right lower lung lobe on thoracic CT (H).
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Chest radiography performed three years prior to this presentation showed a dense infiltrate in the right lower lung field (Fig. 1A) that was further confirmed by the thoracic computed tomography (CT) finding of consolidation with bronchial dilatation (Fig. 1E). A chest radiograph (Fig. 1B) and thoracic CT (Fig. 1F) taken 1 year later demonstrated an expansion of the dense infiltrate in the right lower lung field, in which a newly recognized cyst had developed, measuring 2 cm in size. A chest radiograph (Fig. 1C) and thoracic CT (Fig. 1G) taken 1 year prior to this presentation revealed that the cyst had grown to 4 cm in size. Finally, a chest radiograph (Fig. 1D) and thoracic CT (Fig. 1H) taken at her first visit to our hospital demonstrated a large cyst in the right lower lung measuring 7 cm in size. The images also showed generalized tiny nodules in both lungs, with consolidation in the left lower lung (Fig. 1D, H).
Hematoxylin and Eosin staining of biopsy specimens obtained from the left lower lobe showed acinar proliferation of cuboidal cancer cells, suggesting pulmonary adenocarcinoma.
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Hematoxylin and eosin staining of transbronchial biopsy specimens obtained from the left lower lung field showed well-differentiated atypical cuboidal cells with an acinar pattern of growth (Fig. 2).