Tubular Adenoma With High-Grade Intraepithelial Neoplasia Arising From Heterotopic Gastric Mucosa in the Cervical Esophagus
Heterotopic gastric mucosa of the cervical esophagus, while common, rarely undergoes neoplastic transformation. We report a rare case of a 55-year-old man with a 0.8 cm sessile elevated lesion (Paris 0-Is) arising within a cervical inlet patch. Meticulous endoscopic evaluation using magnifying narrow-band imaging a...