PMC6838463_01
Chest computed tomography scan showed mild dilation of the pulmonary arteries and slightly mosaic appearance (A-C) and a mass lesion (closed arrow) in the left lingual lobe as the primary lung cancer (B). Lung scintigraphy using 99mTc-MAA (D) and 81mKr (E) showed multiple peripheral mismatching perfusion defects.
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Chest computed tomography (CT) scan showed mild dilation of the pulmonary arteries and a slightly mosaic appearance (Fig. 1A-C) along with a mass lesion of the left lingual lobe as the primary lung cancer (Fig. 1B). On hospital day 2, pulmonary scintigraphy using 99mTc-MAA and 81mKr showed multiple mismatching perfusion defects (Fig. 1D and E).
Pulmonary microvascular cytology samples processed by the cell block technique. The samples showed atypical cells of lung adenocarcinoma (A: Hematoxylin and eosin staining, B: Papanicolaou staining, C: TTF-1 staining).
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In addition, cell block technique using PMC samples showed the atypical cells to be positive for TTF-1 staining (Fig. 2A-C).