Cost of detecting gastric neoplasia by surveillance endoscopy in atrophic gastritis in Italy: A low risk country

Background Atrophic gastritis (AG) is at increased risk of gastric neoplasia, thus surveillance gastroscopy has been proposed. Aims To assess cost of detecting gastric neoplasias by surveillance endoscopy according to identified risk factors in Italy. Methods Post-hoc analysis of a cohort study including 200 AG-patients from Italy followed up for a mean of 7.5 (4–23.4) years was done. Considered risk factors were: age >50 years, extensive atrophy, pernicious anaemia, OLGA-OLGIM scores 3–4 at diagnosis. The number of 4-year-surveillance endoscopies needed to be performed to detect one gastric neoplasia (NNS) was calculated. Results In 19 patients neoplasias (4 gastric cancers, 8 type 1 gastric carcinoids, 7 dysplasias) were detected at the 361 surveillance gastroscopies, corresponding to NNS of 19 and a cost per gastric neoplastic lesion of €2945. By restricting surveillance to pernicious anaemia patients, reduction of NNS and cost per neoplasia to 13.8 and €2139 may be obtained still detecting 74% of neoplasias. By limiting the surveillance to pernicious anaemia patients and OLGA 3–4, 5 (26.3%) neoplasias would have been detected with a corresponding NNS of 5.4 and a cost per lesion of €837. Conclusion Risk factors may allow an efficient allocation of financial and medical resources for endoscopic surveillance in AG in a low risk country.