Danish cancer patients have more advanced cancer at the time of diagnosis than cancer patients in other Scandinavian countries, probably because of a delay in the diagnosis. Only 50% of the cancer patients have specific cancer symptoms when they initially contact their doctor. In Central Region, Denmark, a specific diagnosing program for patients with suspected serious disease that could be cancer without organ specific symptoms has been established at the Diagnostic Centre in Silkeborg. The diagnosing is planned as a parallel course instead of a serial course. A very close co-operation with all internal medical specialties, radiology, clinical biochemistry and gynecology is necessary.