| 摘要 |
A diagnostic agent for being sprinkled to the inner wall of a gastrointestine in endoscopic observation, comprising an acidic aqueous solution of pH 1 to 5 containing a colorant and also containing at least one acid selected from the group consisting of a carboxylic acid, hydrochloric acid, sulfuric acid and phosphoric acid. By sprinkling such a diagnostic agent to the inner wall of a gastrointestine in endoscopic observation, it is possible to clearly observe a lesion which is difficult to be determined. In particular, it is suitable for observing lesions having cancer cells in the stomach or the Barrett's esophagus. |
