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Table 5 Risk categories based on LNM risk model

From: A nomogram to predict lymph node metastasis risk for early esophageal squamous cell carcinoma

Risk categories Risk stratification LNM risk
Low risk T1a, High/middle differentiated, < 2.5 cm 0
Low risk T1a, High/middle differentiated, > = 2.5 cm 8%
Moderate risk T1a, Low differentiated, < 2.5 cm 14%
Moderate risk T1a, Low differentiated, > = 2.5 cm 28%
Moderate risk T1b, High/middle differentiated, < 2.5 cm 12%
Moderate risk T1b, High/middle differentiated, > = 2.5 cm 24%
High risk T1b, Low differemtiated, < 2.5 cm 36%
High risk T1b, Low differentiated, > = 2.5 cm 59%