000461 IS SERUM CA 125 ESSENTIAL TO DIFFERENTIATE BETWEEN MALIGNAT AND BENIGN ADNEXAL TUMOURS? A MULTICENTRE STUDY BY THE INTERNATIONAL OVARIAN TUMOUR ANALYSIS (IOTA) GROUP. (1st September 2005) - Timmerman, D.; Van Calster, B.; Jurkovic, D.; Valentin, L.; Testa, A. C.; Bernard, J. P.; Van Holsbeke, C.; Van Huffel, S.; Vergote, I.; Bourne, T.