“…7 Magnifying endoscopy with narrow-band imaging is reported to be effective in diagnosing papillary adenocarcinoma. [8][9][10] The vessels within the epithelial circle pattern on magnifying endoscopy with narrow-band imaging exhibited a sensitivity and specificity of 84.6% and 96.9%, respectively, for diagnosing papillary adenocarcinoma. However, coexisting undifferentiated carcinomas were observed in 22.9% of vessels within the epithelial circlepositive cancers.…”