A spotlight on Rectal Neuroendocrine Neoplasms
What are Rectal NENs Rectal Neuroendocrine Neoplasms (NENs) (rNENs) account for approximately 1-2% of all primary cancers in the rectum. The other main cancer types found in the rectum are regular adenocarcinomas (the vast majority) and some other rare types including Gastrointestinal stromal tumors (GIST) and Lymphoma. The vast majority of rNENs will be well differentiated, i.e. rectal Neuroendocrine Tumours (rNETs) and are mostly indolent tumours treated effectively with surgical procedures if less than 1cm in size. Above that size there are different scenarios. Most will be found incidentally upon presentation of classic rectal symptoms or via colonoscopy screenings and…
