Subsequently, a second panel may be performed including lymphoid markers (CD3 and CD20 for T and B lymphocytes, respectively), epithelial markers (EMA and CEA), chromogranin (neuroendocrine tumors), thyroid transcription factor (lung cancer), WT1 (ovarian carcinoma), prostate-specific antigen and acid phosphatase (prostate carcinoma).58 Here, KLK3 is linked to lung carcinoma.