Table 1: Comparison of endoscopic diagnosis of the depth of submucosal deeply invasive colon cancer.

Diagnostic methodNumber of adenoma, m-ca#sm-slight-ca##Number of sm deep-ca###Overall accuracy (%)Sensitivity (%)Specificity (%)PPV (%)NPV (%)

Magnifying chromoendoscopy (Invasive pattern)403518098.885.699.486.599.4
NBI with magnifying colonoscopy (capillary pattern classification)973387.784.888.771.894.5
Nonlifting sign2452694.861.598.480.096.0

#Intramucosal cancer.
##sm slight invasive (<1000 μm) cancer.
###sm deep invasive ( 1000 μm) cancer.