A novel technique for large colorectal specimen retrieval after endoscopic submucosal dissection: anoscope-assisted tumor extraction by defecation

Colorectal endoscopic submucosal dissection (ESD) has emerged as the gold standard for treating extensive superficial colorectal neoplasms, allowing the en bloc excision of particularly large lesions [1] [2]. Preserving the integrity of the specimen ensures an optimal histopathological evaluation can be performed. Lesions up to 6 cm are typically retrieved using a basket net; with larger specimens, traditional devices often prove insufficient, making extraction without damage challenging.