Colorectal neuroendocrine neoplasms-update of the diagnostic and therapeutic guidelines (recommended by the Polish Network of Neuroendocrine Tumours)

Colorectal neuroendocrine neoplasms (CRNENs), especially rectal tumours, are diagnosed with increased frequency due to the wide- spread use of colonoscopy, including screening examinations. It is important to constantly update and promote the principles of optimal diagnostics and treatment of these neoplasms. Based on the latest literature and arrangements made at the working meeting of the Polish Network of Neuroendocrine Tumours (June 2021), this paper includes updated and supplemented data and guidelines for the manage- ment of CRNENs originally published in Endokrynologia Polska 2017; 68: 250-260. (Endokrynol Pol 2022; 73 (3): 584-611)