NBI and NBI Combined with Magnifying Colonoscopy

Table 1

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

Diagnostic method	Number of adenoma, m-ca^#sm-slight-ca^##	Number of sm deep-ca^###	Overall accuracy (%)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
Magnifying chromoendoscopy (Invasive pattern)	4035	180	98.8	85.6	99.4	86.5	99.4
NBI with magnifying colonoscopy (capillary pattern classification)	97	33	87.7	84.8	88.7	71.8	94.5
Nonlifting sign	245	26	94.8	61.5	98.4	80.0	96.0

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