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Human diseases in ICD-11 classification [BR:br08403]
  02 Neoplasms
    Malignant neoplasms, except primary neoplasms of lymphoid, haematopoietic, central nervous system or related tissues
      Malignant neoplasms, stated or presumed to be primary, of specified sites, except of lymphoid, haematopoietic, central nervous system or related tissues
        Malignant neoplasms of digestive organs
          Malignant neoplasms of intestine
            2C00  Malignant neoplasms of anus or anal canal
              H00044  Cancer of the anal canal