| Theme | Forefront of endoscopic treatment in early colorectal cancer | |
|---|---|---|
| Title | Hook knife EMR method for colorectal tumors | |
| Publish Date | 2003/11 | |
| Author | Kinichi Hotta | Department of Gastroenterology, Saku Central Hospital |
| Author | Tsuneo Oyama | Department of Gastroenterology, Saku Central Hospital |
| Author | Dai Hirasawa | Department of Gastroenterology, Saku Central Hospital |
| Author | Akihisa Tomori | Department of Gastroenterology, Saku Central Hospital |
| Author | Shigeki Shimaya | Department of Gastroenterology, Saku Central Hospital |
| Author | Shuko Morita | Department of Gastroenterology, Saku Central Hospital |
| Author | Tadashi Sakurai | Department of Gastroenterology, Saku Central Hospital |
| Author | Yoshinori Miyata | Department of Gastroenterology, Saku Central Hospital |
| [ Summary ] | We have developed a new EMR method, the 'Hook knife' method, for en-bloc resection of large upper GI lesions. Recently, we applied this method to treatment of large colorectal lesions. First, we placed marks around the lesion with a Hook knife. Next, sodium hyaluronate solution was injected into the submucosal layer to separate the mucosa from the proper muscular layer. Then, we cut the mucosa around the lesion with a needle knife. Finally, we cut the submucosal fibers and vessels using a Hook knife and resected the lesion in a single piece. We have treated 10 colorectal tumors using this method. The rate of en-bloc resection was 70%, and no perforations or late bleeding occurred. In this method, we can make accurate histopathologic assessments of the retrieved specimen and expect complete resection without local recurrence. | |