Tsuji Y
Second Department of Medicine, Kurume University School of Medicine, Japan.
Kurume Med J. 1998;45(1):87-94. doi: 10.2739/kurumemedj.45.87.
The usefulness of magnifying endoscopy was assessed by examining the extent to which a magnifying endoscope can provide images of pits and by analyzing the consistency of the pit patterns visualized by magnifying endoscopy with the pit patterns visible under a stereomicroscope. Study materials consisted of 83 cases of tumorous colorectal lesions. Under a magnifying endoscope, pits were visible across the entire surface of the lesion in 46 (55.4%) of the 83 cases. The pit pattern visualized by magnifying endoscope in 32 (69.6%) of the 46 cases was identical to the pattern observed under a stereomicroscope. Of various pit patterns, type IIIs (tubular, round pit that is smaller than normal pit), type IIIL (tubular, round pit that is larger than normal pit) and type IV (dendritic, gyrus-like type pit) were relatively well visualized under a magnifying endoscope. It was difficult to obtain images of type V (irregular or amorphous pit) with a magnifying endoscope. It seems therefore easy to distinguish tumors from non-tumorous lesions using a magnifying endoscope. This imaging technique may provide information more useful for the diagnosing tumorous colorectal lesions and selecting therapeutic strategy, if staining methods and mucus-removing methods are improved.
通过检查放大内镜能够提供的凹陷图像程度以及分析放大内镜观察到的凹陷模式与立体显微镜下可见的凹陷模式的一致性，来评估放大内镜的实用性。研究材料包括83例结直肠肿瘤性病变。在放大内镜下，83例中的46例（55.4%）病变表面均可见凹陷。46例中的32例（69.6%）放大内镜观察到的凹陷模式与立体显微镜下观察到的模式相同。在各种凹陷模式中，III s型（管状、圆形凹陷，小于正常凹陷）、III L型（管状、圆形凹陷，大于正常凹陷）和IV型（树枝状、脑回样凹陷）在放大内镜下相对易于观察。用放大内镜很难获得V型（不规则或无定形凹陷）的图像。因此，使用放大内镜似乎很容易区分肿瘤与非肿瘤性病变。如果染色方法和黏液去除方法得到改进，这种成像技术可能为诊断结直肠肿瘤性病变和选择治疗策略提供更有用的信息。
