Objective To evaluate the efficacy and safety of Percutaneous microwave coagulation therapy(PMCT) for liver tumor abutting the gastrointestinal tract,the gallbladder,the diaphragm,the heart,the kidney and the other danger areas(the shortest distance of tumor from the organ ≤ 0.5cm),to explore the optimal ablation condition in order to achieve complete tumor necrosis while these organs were not burn obviously.Methods This study was undertaken in 45 patients who were with liver cancer abutting the gastrointes...