| Theme | New Development of Laterally Spreading Tumor | |
|---|---|---|
| Title | Treatment Strategy for Laterally Spreading Tumors of the Colon and Rectum | |
| Publish Date | 2015/08 | |
| Author | Kinichi Hotta | Division of Endoscopy, Shizuoka Cancer Center |
| Author | Kenichiro Imai | Division of Endoscopy, Shizuoka Cancer Center |
| Author | Sayo Ito | Division of Endoscopy, Shizuoka Cancer Center |
| Author | Yuichiro Yamaguchi | Division of Endoscopy, Shizuoka Cancer Center / Tokura Yamaguchi Clinic |
| Author | Hiroyuki Ono | Division of Endoscopy, Shizuoka Cancer Center |
| [ Summary ] | Laterally spreading tumors (LSTs) treated in our hospital were analyzed. Our results indicated that, for LST‒Gs (homogeneous type), piecemeal resections would be acceptable due to the low risk of submucosal invasion. Thirty percent of LST‒Gs (nodular mixed type) and 20 % of LST‒NGs invaded the submucosal layer ; the non‒invasive lesions were characterized by, large nodules and multicentric growth, respectively. Because of the high frequency of submucosal cancers, en bloc removal in an endoscopic resection is preferable for sufficient histological evaluation for these types of LSTs. | |