White opaque substance within superficial elevated gastric neoplasia as visualized by magnification endoscopy with narrow-band imaging: a new optical sign for differentiating between adenoma and carcinoma.

@article{Yao2008WhiteOS,
  title={White opaque substance within superficial elevated gastric neoplasia as visualized by magnification endoscopy with narrow-band imaging: a new optical sign for differentiating between adenoma and carcinoma.},
  author={Kenshi Yao and Akinori Iwashita and Hiroshi Tanabe and Nobuaki Nishimata and Takashi Nagahama and Shinichiro Maki and Yasuhiro Takaki and Fumihito Hirai and Takashi Hisabe and Taku Nishimura and Toshiyuki Matsui},
  journal={Gastrointestinal endoscopy},
  year={2008},
  volume={68 3},
  pages={
          574-80
        }
}
BACKGROUND The microvascular pattern (MVP) as visualized by magnification endoscopy (ME) is a reliable marker for differentiating between benign and malignant gastric flat lesions. However, in cases of gastric neoplasia of 0-IIa type, it is sometimes impossible to visualize the MVP because a white opaque substance (WOS) obscures the subepithelial MVP. OBJECTIVE To investigate whether the morphology of the WOS could be a useful optical sign for discriminating between adenoma and carcinoma… CONTINUE READING

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