Nurse endoscopists: a rational response to rising rates of young-onset colorectal cancer in Aotearoa New Zealand.

Young-onset (<50 years) colorectal cancer (YOCRC) has been increasing in Aotearoa New Zealand since the birth cohort born around the mid-1950s. Possible responses include education and public health measures, none of which are likely to make a major impact in the foreseeable future. Many YOCRCs are presenting at late stages with predominantly distal cancers. Our current National Bowel Screening Programme (NBSP), screening people 60-75 years, was introduced with inadequate resources; as a result, some colonoscopy services have been moved from symptomatic cases to screening, resulting in diagnostic delays and poorer outcomes. Extending screening to 40 or 45 years will markedly increase the need for follow-up colonoscopies and stretch services beyond breaking point. Sigmoidoscopy is associated with a substantial and sustained reduction in risk of distal colorectal cancer incidence and mortality. As there are too few endoscopists for the existing workload, increasing the nurse endoscopist workforce is a rational step. Initial training would focus on flexible sigmoidoscopy (FS) and concentrate on symptomatic patients <50 years. Steadily increasing nurse endoscopist numbers will contribute to management of the rising incidence of YOCRC. Without disrupting the NBSP or putting much extra strain on need for follow-up colonoscopies, nurse-led FS clinical services can expand to anyone with relevant symptoms and, as a longer-term goal, eventually become part of an expanded screening programme that could include one-off FS at age 50. If we are agreed that this is essential, training and service must be adequately funded and accompanied by a public advocacy campaign to ensure sufficient resources.