Transformation of Two Cases of Lung Adenocarcinoma into Pulmonary Sarcomatoid Carcinoma following Treatment

Figure 1

Pathological image of the patient diagnosed with lung adenocarcinoma in case 1 ((a) hematoxylin and eosin ×100). Pathological image of the patient diagnosed with PSC in case 1 ((b) pleomorphic carcinoma; hematoxylin and eosin ×100). Immunohistochemical images of the patient diagnosed with PSC in case 1 ((c) vimentin (+); (d) CK (+); (e) TTF-1 (+) taken using the Roche Ventana BenchMark XT autostainer (×100) (Roche Holding, Basel, Switzerland)).

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