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MDCT - N Staging
Lymphatic spread is found in 74%–
88% of patients
N staging depends on the number of
lymph nodes involved
Based on size criteria (short axis):
≥6mm perigastric
≥ 8mm extra perigastric
Kwee RM, Kwee TC. 2009 Gastric cancer; 12: 6-22
Parameter Percentage range
Sensitivity
62.5 - 91.9%
Specificity
50 - 87.9%
Stage No of Regional Nodes
N1
≤2
N2
3-6
N3a
7 - 15
N3b
≥16