CD56 (NCAM) immunohistochemistry is also used by pathologists to identify specific tumors such as pheochromocytoma, paraganglioma, T cell/ natural killer lymphoma, myeloid leukemia, myeloma, neuroendocrine tumors, Wilms’ tumor, neuroblastoma, pancreatic acinar cell carcinoma, Ewing’s Sarcoma and small cell carcinoma of lung. This evidence concerns the gene NCAM1 and Ewing sarcoma.