PMC3085439_01
Primary PMCAC. (a) Chest X-ray revealing a solitary tumor in the right lower lobe of the lung. (b) Computed Tomography scan of the thorax. A large cystic well-demarcated mass in the right lower lobe of the lung is detected (19 Hounsfield Units).
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fig1
A chest X-ray showed a large mass in the right lung (Figure 1(a)). Tomography (CT) of the chest revealed a tumor originating in the right lower lobe, measuring 9.3 x 7.5 cm (Figure 1(b)). The lesion had a low attenuation (19 Hounsfield Units), and tiny, mildly enhancing septa was recognized.
Primary PMCAC. The tumor consists of a large cystic space filled with mucin and lined by columnar neoplastic epithelium. (H&E, 25X).
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fig2
The tumor consisted of a large cystic space filled with mucin, and many smaller cysts along its wall (Figure 2).