This study investigated the prevalence and causes of pain at the early stages of cancer.Results:
240 patients (64%) answered. Of these, 66 patients (28%) reported pain and were examined in the pain clinic. Thirty patients had pain caused by direct tumor growth, and 44 had pain secondary to cancer or its treatment. In 12 of 66 patients, the pain was unrelated to cancer. Fifteen patients had two or more different types of pain simultaneously.