Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access |

Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc |

Journal website http://www.gastrores.org |

Original Article

Volume 4, Number 5, October 2011, pages 210-215

**Efficacy of Narrow Band Imaging System Combined With Magnifying Endoscopy for Differentiating Type IIa Early Gastric Cancer From Adenoma**

Figures

Tables

Adenoma (n = 32) | EGC IIa (n = 14) | P value | |
---|---|---|---|

EGC IIa: type IIa early gastric cancer. | |||

All analyses were performed by the 2-sided Fisher’s exact test except tumor size (Student t-test). | |||

^{*}Sensitivity 85.7%, specificity 87.5%, and positive predictive value 75.0% (for EGC IIa). | |||

Size, mean ± SD, cm | 1.96 ± 0.80 | 2.02 ± 0.53 | 0.892 |

Reddish color, n (%) | 3 (9) | 2 (14) | 0.633 |

Obscure margin, n (%) | 1 (3) | 1 (7) | 0.521 |

Central concavity, n (%)* | 4 (13) | 12 (86) | < 0.001 |

IMVPs | Adenoma (n = 96) | EGC IIa (n = 42) | P value |
---|---|---|---|

IMVPs: irregular microvascular patterns; ISIMVPs: intrastructual irregular microvascular patterns; EGC IIa: type IIa early gastric cancer; N.A: not available. All analyses were performed by the 2-sided Fisher’s exact test. | |||

^{*}Sensitivity 84.3%, specificity 76.2%, and positive predictive value 89.0% (for adenoma). | |||

^{†}Sensitivity 30.9%, specificity 93.5%, and positive predictive value 68.4% (for EGC IIa). | |||

^{‡}Sensitivity 45.2%, specificity 90.6%, and positive predictive value 67.8% (for EGC IIa). | |||

Slight ISIMVPs*, n (%) | 81 (84) | 10 (24) | < 0.001 |

Severe ISIMVPs†, n (%) | 6 (6) | 13 (31) | < 0.001 |

Fine network‡, n (%) | 9 (10) | 19 (45) | < 0.001 |

Corkscrews, n (%) | 0 (0) | 0 (0) | N.A |

The presence of corkscrews | Adenoma (n = 96) | EGC IIa (n = 42) | P value |
---|---|---|---|

EGC IIa: type IIa early gastric cancer. | |||

The definition of the presence of corkscrew is the observation of corkscrew vascular changes in over 25% of a selected field. | |||

All analyses were performed by the 2-sided Fisher’s exact test. | |||

^{*}Sensitivity 9.5%, specificity 100%, and positive predictive value 100% (for EGC IIa). | |||

Positive, n (%)* | 0 (0) | 4 (9.5) | 0.008 |

Negative, n (%) | 96 (100) | 38 (88) |

IMVPs | The presence of corkscrews | P value | |
---|---|---|---|

Positive | Negative | ||

IMVPs: irregular microvascular patterns; ISIMVPs: intrastructual irregular microvascular patterns; EGC IIa: type IIa early gastric cancer. | |||

All analyses were performed by the 2-sided Fisher’s exact test. | |||

Slight ISIMVPs, n = 91 (%) | 0 (0) | 91 (100) | 0.012 |

Severe ISIMVPs, n = 19 (%) | 4 (21) | 15 (79) | < 0.001 |

Fine network, n = 28 (%) | 0 (0) | 28 (0) | 0.582 |