Influence of Somatuline Autogel 120mg on Post-operative Drainage After Total Mesorectum Excision for Rectumcarcinoma

Drain fluid will be checked for hematocrit daily post-surgery. Once hematocrit levels of the drain fluid are \<10%, study medication (0.246mg lanreotide base/mg solution) will be administered. After administration the volume of the drain fluid will be measured every 12 hours for at least 5 days. A sample of the drain fluid will be collected every 24 hours for at least 5 days and frozen at -70°C for total protein content, sodium and chloride analysis afterwards.

Drain fluid will be checked for hematocrit daily post-surgery. Once hematocrit levels of the drain fluid are \<10%, placebo (Sodiumchloride 0,9% 1 ampoule) will be administered. After administration the volume of the drain fluid will be measured every 12 hours for at least 5 days. A sample of the drain fluid will be collected every 24 hours for at least 5 days and frozen at -70°C for total protein content, sodium and chloride analysis afterwards.