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Table 3 Normalized stages and tumor grade in the NLP system

From: Natural language processing for populating lung cancer clinical research data

Standardized StagesStandardized Tumor Grades
IaWell differentiated
IbModerately differentiated
IIaPoorly differentiated
IIbUndifferentiated
IIIa 
IIIb 
IV 
Early stage 
Late stage 
Extensive (SCLC) 
Limited (SCLC)