Abstract: Disclosed herein is a solution, in particular a pharmaceutically acceptable solution, comprising icodextrin and hydroxyalkyl starch (HAS) that can be used in methods of preventing metastasis formation and/or relapse by administration to a body cavity of a subject afflicted with cancer. Also disclosed is a kit comprising icodextrin and HAS in pre-weighed amounts and a pharmaceutically acceptable means of dissolving the same. Also disclosed is a device comprising a pharmaceutically acceptable solution and means for administering the same.

Abstract: The present invention relates to a polysaccharide comprising, optionally substituted, monosaccharide units linked via alpha-glycosidic bonds for use in preventing metastasis formation and/or relapse by administration to a body cavity of a subject afflicted with cancer. The present invention further relates to a method for preventing metastasis formation in a subject afflicted with cancer, comprising administering said composition to a body cavity of said subject, and thereby preventing metastasis formation in said subject. The present invention also relates to a composition and to a kit comprising a polysaccharide and a pharmaceutically acceptable means of solubilizing the same and to a device comprising a polysaccharide and means for administering the same.