19bec0cb_ocess___Cancer_Guidelines_Wiki__Prognosis
[Level] IV [Intervention] Case series with either post-test or pre-test/post-test outcomes [Diagnosis] Study of diagnostic yield (no reference standard) [Aetiology] A cross-sectional study [Screening] Case series [Prognosis] 
Case series, or cohort study of patients at different stages of disease
Guideline development process - Cancer Guidelines Wiki
Prognosis