PMC4311031_01
Chest computed tomography (CT) scan in December of 2012 (B) showed a 2.5-cm diameter hilar mass that was little changed, as compared to the cardiac angio CT scan in March of 2010 (A).
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F1
A cardiac angio computed tomography (CT) scan performed at that time detected a 2.5-cm diameter, minimally enhanced mass in the right hilar area (Figure 1A). A chest CT scan showed a 2.5-cm diameter mass in the right hilum that changed little in terms of size since 2010 (Figure 1B).
Grossly, several enlarged lymph nodes (arrows) were found in the hilar and interlobar area.
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F2
Grossly, several enlarged lymph nodes were found in the hilar and interlobar areas (Figure 2).
Microscopic finding showed metastatic squamous cell carcinoma to the lymph nodes (H&E stain, x40; insert image: H&E stain, x200).
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F3
Microscopically, metastatic squamous cell carcinoma was found at several lymph nodes (8/45) and there was no tumor in the lung parenchyma and bronchial tree (Figure 3).