Concurrent Tumors Revealed by an Autopsy-A Case Report and Literature Review

Figure 4

Immunohistochemistry evaluation of the lung surgical specimen. (a) 90% positive nuclear immunostaining for TTF-1 biomarker (IHC; 40X). (b) 85% positive cytoplasmic immunostaining for Napsin A biomarker (IHC; 40X). (c) Diffuse and intense membranous staining reaction for CK7 biomarker (IHC; 40X). (d) Negative immunostaining for CK20 biomarker (IHC; 40X).

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(b)

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