This code system http://fhir.ch/ig/ch-crl/CodeSystem/nkrs-typerecurrencetransformation defines the following codes:
Code | Display | Definition |
1 | Progression | Locoregional new findings without disease free intermission. \r\nFor example: the tumour that is still present starts to progress after a period of stabilisation. |
2 | Transformation | The development of one ICD-O M term into another (for example, the change of a \r\nhaematopoetic or lymphoid neoplasm from chronic to acute phase). In order to decide on haematological \r\ntransformation event, adherence to the ENCR recommendation and Haemacare guideline, cited below, is mandatory. |
3 | Metastasis | New finding at a site distant to the primary tumour, i.e. metachronous metastasis. \r\nEither with or without disease free intermission. |
4 | Relapse | Locoregional new findings after a period of documented disease-free intermission or \r\nremission without detectable tumour. |