We reported three techniques in withdrawing specimen (“suction trap method”,“Roth retrieval net method”, and“transparent cap method”) following endoscopic resection for colorectal diseases.
In the suction trap method, a gauze was put in the connection part of suction tube. This method made it possible to withdraw the specimen smaller than 7～8mm in diameter by suction only. The Roth retrieval net method was useful for patients who had multiple lesions larger than 7～8mm in the right side colon and large tumor that endoscopic piecemeal mucosal resection should be performed. All specimens were able to be withdrawn at one time by this method. The transparent cap method was useful for patients who had a lesion greater than 20mm, and it could provide complete withdrawing of the whole specimen without injuring the specimen.
