Optical real-time biopsy by endocytoscopy: a case of sessile serrated lesion with dysplasia

Sessile serrated lesions (SSLs) are early precursor lesions in the serrated neoplasia pathway, which progresses through SSL with dysplasia (SSLD) to invasive carcinoma. In SSLD, certain endoscopic characteristics, including double elevation, central depression, and reddishness, have been found frequently, and type IIIL, IV, and VI pit patterns were observed more frequently using magnifying chromoendoscopy with indigo carmine or crystal violet...