The liquid medicine which consists of the liquid which melt dissolved the carbon dioxide of this invention, and is administered using a liquid injection pouring means, and the liquid medicine which consists of the liquid which melt dissolves the carbon dioxide administered using the liquid injection pouring means of this invention Depending on the treatment method used, the tumor can be reduced or eliminated with few side effects. The liquid medicine which consists of the liquid which melt dissolved the carbon dioxide of this invention, and is administered using a liquid injection pouring means, and the liquid medicine which consists of the liquid which melt dissolves the carbon dioxide administered using the liquid injection pouring means of this invention When the treatment method used is combined with surgical treatment, chemotherapy, radiotherapy, and immunotherapy of tumors, the effect can be enhanced and side effects can be reduced as compared with those monotherapy or multimodality therapy.本発明の二酸化炭素を溶解した液体からなり、液体注入手段を用いて投与される液状医薬、及び、本発明の液体注入手段を用いて投与される、二酸化炭素を溶解した液体よりなる液状医薬を用いる治療方法により、副作用をほとんど伴わずに腫瘍を縮小もしくは消失させることができる。本発明の二酸化炭素を溶解した液体からなり、液体注入手段を用いて投与される液状医薬、及び、本発明の液体注入手段を用いて投与される、二酸化炭素を溶解した液体よりなる液状医薬を用いる治療方法と、腫瘍の外科療法、化学療法、放射線療法、免疫療法とを併用すると、それらの単独療法もしくは集学的療法に比べて、効果を増強したり、副作用を低減できたりする。
