The estimated incidence rates are similar to those reported in previous studies in European and North American countries. These results will contribute to the development of National Registration of Childhood Cancer in France and support the national research program on childhood cancer.

In Brittany, the age specific incidence, clinical features, and prognosis of CD among the elderly are comparable to those in younger individuals. Colon involvement is more common. Concomitant diverticular disease is common and should prompt a search for CD lesions at other sites to confirm the diagnosis. Older patients are less likely to require immunosuppressants or admission for flares.

No abstract

The pathways of care for French adolescent patients with cancer are heterogeneous. Our results reveal differences in MDT meetings according to tumor types and a lack of effective collaboration between pediatric and adult wards. Efforts must be made to develop cancer networks to ensure that adolescents receive the optimal care in a suitable environment.

Marie-Laure RABILLOUD and Emma BAJEUX declare no conflict of interest Acknowledgments: All physicians who included patients in the ABERMAD registry particularly to Etienne Cruchant, Jean-Luc Alexandre et Jacques-Arnaud Seyrig members of the scientific committee of ABERMAD.