Which of the following markers is not typically expressed by neuroendocrine tumours?
High-Yield Explanation
CK7 is an epithelial cell marker and is positive in carcinomas (especially the epithelial tumours arising from foregut). The following immunohistochemical markers are positive in neuroendocrine neoplasms: Synaptophysin Chromogranin A CD56 Neuron specific enolase (NSE)