In panNET tumors, a relatively lower expression of CD47 (interacts with signal regulatory proteins (SIRPα) on phagocytes such as macrophages and sends elimination evasion information) in tumor cells or higher numbers of CD163+ tumor-associated macrophages have been associated with poor prognosis, suggesting that these factors may act as prognostic indicators of panNET. Here, CD163 is linked to neoplasm.