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Table 4 Modular structure of TNM-O. Codes in clinical documentation and cancer registries follow TNM versions, because the meaning of codes and stages may change between versions. The modular structure is designed to include versions for every available TNM encoded entity (tumour location) so that the intended meaning is preserved according to the version used for coding

From: TNM-O: ontology support for staging of malignant tumours

Name

Description

BTL2

Upper domain level ontology

TNM-O

TNM-O central connecting ontology

TNM-O_breast_7

TNM-O for breast cancer (TNM version 7) in: [32]

TNM-O_colorectal_6

TNM-O for colorectal cancer (TNM version 6)

TNM-O_colorectal_7

TNM-O for colorectal cancer (TNM version 7)