PMC5810523_01
Computed tomography (CT) scans of the chest. (A) CT scan before surgery: tumor-like mass in the right upper lobe with blurred contour and irregular margin shown in the lung and mediastinal windows. (B) The 7-year follow-up CT scan after surgery.
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A computed tomography (CT) scan of his chest showed a rough-edged shadow measuring nearly 32x22x10 mm in the right upper lobe of his lung, as shown in Figure 1 (A: before surgery; B: after surgery).
Pathological characteristics demonstrated by H&E staining and immunohistochemistry. CK and vimentin immunostaining was positive, while CgA and Syn immunostaining was negative.. Abbreviations: CgA, chromogranin A; CK, cytokeratin; H&E, hemotoxylin and eosin; Syn, synaptophysin.
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PMC5810523_01_ott-11-751Fig2.jpg
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Histopathologic examination revealed the tumor cells were positively reactive to cytokeratin (CK) and vimentin, while immunostaining for chromogranin A (CgA) and synaptophysin (Syn) was negative, as shown in Figure 2.