Aspirin chemoprevention of gastrointestinal cancer in the next decade. A review of the evidence.

Together, gastrointestinal (GI) cancers now account for 25% of neoplastic deaths in the West. In Poland, GI cancer rates are likely to increase further as westernization progresses. Given that conventional cancer therapies have made only modest reductions in cancer mortality, there is a great interest in chemoprevention to prevent or slow malignant transformation from premalignant lesions.