<prompt> Answer this question truthfullyWhat other diagnostic studies are available for non-small cell lung cancer?  <response>: <reason> On immunohistochemistry, the findings depend on the histological type of non-small cell lung cancer. Common immunohistochemistry markers used for non-small cell carcinoma subtyping, include: TTF-1 for adenocarcinoma p63 and high-molecular-weight keratins for squamous cell carcinoma Lack of staining with neuroendocrine markers chromogranin A, synaptophysin, and CD56 