O-274 - PROPHYLACTIC INTRA-PERITONEAL CHEMOTHERAPY FOR COLON CANCER PATIENTS AT HIGH RISK OF PERITONEAL CARCINOMATOSIS - INDIVIDUAL PATIENT DATA META-ANALYSIS. PICCOLA STUDY Arjona Sánchez Álvaro; Rodríguez-Ortiz Lidia; Gutiérrez Calvo Alberto; Segura Sampedro Juan José; Pérez Viejo Estíbaliz; Tanis Pieter;