CT colonography provides new insights into interval cancers
A partir d'une revue systématique de la littérature publiée entre 1994 et 2017 (12 études incluant au total 19 867 patients âgés de 18 à 96 ans), cette méta-analyse évalue la performance, du point de vue du taux de cancer colorectal 36 mois après l'examen de dépistage et du taux de cancer de l'intervalle, et la sécurité d'un examen quinquennal utilisant la coloscopie virtuelle par tomodensitométrie
Interval cancers discovered shortly (eg, 3 years) after a negative colonoscopy are a topic of great clinical interest. Potential explanations for these interval cancers include missed or incompletely resected lesions, or rapidly growing new lesions. The prevailing notion is that most interval cancers after colonoscopy result from missed lesions,1 but data on this are sparse. The incidence of interval cancers ranges from 0·78–2·9 cases per 1000 person-years of post-colonoscopy follow-up.2 Around 3–9% of all cancers diagnosed among patients undergoing colonoscopy arise within an interval of 3 years after a negative procedure.
The Lancet Gastroenterology & Hepatology , commentaire, 2017