Japanese Journal of Clinical Oncology 32:118-119 (2002)
© 2002 Foundation for Promotion of Cancer Research
Editorial |
Cancer Screening in Patients with Cancer
National Cancer Center Hospital, Tokyo, Japan
| The first 10% of the full text of this article appears below. |
Interest in multiple primary malignant neoplasms is long-standing since the WarrenGates report (1) in 1932. We have the impression that multiple cancer cases have recently been increasing in number. Multiple primary neoplasms in the same individual are experienced more frequently as advances in cancer treatment prolong life. Improved survival rates for patients with neoplastic disease, largely due to early diagnosis, allow more patients to survive long enough to develop subsequent primary tumors.
The development of more sophisticated invasive and non-invasive diagnostic tools has made it possible to detect cancer at an early stage. Furthermore, it has contributed to the detection of synchronous occult tumors which were formerly overlooked. Cases of multiple primary cancers raise questions about underlying environmental factors