Pulmonary Adenocarcinoma Occurring 5 Years after Resection of a Primary Pancreatic Adenocarcinoma: A Relevant Differential Diagnosis
Figure 2
(a) HE-staining of the tumor clearly demonstrates a lepidic growth pattern (×50). (b) The tumor cells display a strong expression of CK7. (c) The tumor cells are negative for TTF-1 on immunohistochemistry (note positive internal control).
