Influence of the department on the resection rate in palliative treatment of metastatic colorectal cancer (CRC)

13528 Background: During the last years due to the application of Irinotecan, Oxaliplatin and “biologicals” for the first- and secondline treatment of CRC in palliative situation the efficacy of palliative treatment has considerably improved with an acceptable toxicity. The achievements of secondary metastatic resection after downsizing by palliative treatment have increasingly become the focus of interest in palliative patients and opened up new ways in terms of curative options (Folprecht et al. 2005; Wein et al. 2001). Here, we analyse the influence of different departments on the resection rate after palliative treatment. Methods: A prospective phase III trial in metastatic CRC with systemic treatment by 5-FU/sodium FA as a 24h-infusion (AIO) versus AIO plus Oxaliplatin followed by secondary metastatic resection. Trial start: 2000; end of trial: 2005. Randomized patients: n = 240 by 5 centers experienced in clinical trials. In order to achieve a homogeneous patient group, non-resectability of distant metastases was required according to pre-defined criteria. Stratification characteristics: In accordance to the participating departments; ECOG index 0.1 vs 2. Involvement of the hepatic tumour extension 25% vs other localisation; organ manifestation 1 vs > 1. Inclusion criteria: Definitively non-resectable metastases. Palliative first-line treatment: Histologically proven adenocarcinoma of the colon or rectum, unambiguous enlargement of metastatic masses in objective imaging procedures. At least one bidimensionally measurable tumour lesion. Age: > 18, < 75 years. Exclusion criteria: Concomitant treatment with other anti-neoplastic substances. Sensoric neuropathy. Results: Resected/randomized patients of 176 currently evaluable patients, both treatment groups combined: department (dep.) 01: 0/26 (0%), dep. 02: 10/27 (37.0%), dep. 03: 21/68 (30.9%), dep. 04: 8/43 (18.6%), dep. 05: 1/12 (8.3%), total: 40/176 (22.7%). Although in the total population, a remarkable resection rate could be achieved, the variation between the departments is high (p=.0043 for differences between departments). Conclusions: The resection rate after palliative CRC treatment essentially depends on the department. No significant financial relationships to disclose.