Textbook Oncological Outcome in European GASTRODATA.

ABSTRACT

OBJECTIVE: To assess the rate of textbook outcome (TO) and textbook oncological outcome (TOO) in the European population based on the GASTRODATA registry. BACKGROUND: TO is a composite parameter assessing surgical quality and strongly correlates with improved overall survival. Following the standard of treatment for locally advanced gastric cancer, TOO was proposed as a quality and optimal multimodal treatment parameter. METHODS: TO was achieved when all the following criteria were met no intraoperative complications, radical resection according to the surgeon, pR0 resection, retrieval of at least 15 lymph nodes, no severe postoperative complications, no reintervention, no admission to the intensive care unit, no prolonged length of stay, no postoperative mortality and no hospital readmission. TOO was defined as TO with the addition of perioperative chemotherapy compliance. RESULTS: Of the 2558 patients, 1700 were included in the analysis. TO was achieved in 1164 (68.5%) patients. The use of neoadjuvant chemotherapy [odds ratio (OR) = 1.33, 95% CI 1.04-1.70] and D2 or D2+ lymphadenectomy (OR = 1.55, 95% CI 1.15-2.10) had a positive impact on TO achievement. Older age (OR = 0.73, 95% CI 0.54-0.94), pT3/4 (OR = 0.79, 95% CI 0.63-0.99), ASA 3/4 (OR = 0.68, 95% CI 0.54-0.86) and total gastrectomy (OR = 0.56, 95% CI 0.45-0.70), had a negative impact on TO achievement. TOO was achieved in 388 (22.8%) patients. Older age (OR = 0.37, 95% CI 0.27-0.53), pT3 or pT4 (OR = 0.52, 95% CI 0.39-0.69), and ASA 3 or 4 (OR = 0.58, 95% CI 0.43-0.79) had a negative impact on TOO achievement. CONCLUSIONS: Despite successively improved surgical outcomes, stage-appropriate chemotherapy in adherence to the current guidelines for multimodal treatment of gastric cancer remains poor. Further implementation of oncologic quality metrics should include greater emphasis on perioperative chemotherapy and adequate lymphadenectomy.