The aim of this study is to evaluate a new cancer diagnosis center (Diagnostiskt Centrum, DC) in Kristianstad, Sweden. Patients aged ≥ 18 years who are suspected of having serious illness but who have no organ-specific symptoms will be referred to the DC for further investigation after preliminary assessment in primary care. The overall purpose of the study is to evaluate whether the DC meets its target time for diagnosing cancer. In addition, we will evaluate secondary issues, such as survival, to determine whether this pilot project merits extension to other parts of southern Sweden.