Oligometastases: history and future vision of breast cancer

Oligometastases, oligo-recurrence, sync-oligometastases and metachronous oligometastases were proposed based on the spectrum theory. This review article, first, described the history of cancer theory. Second, we described the history of the concepts of oligometastases, oligo-recurrence and sync-oligometastases. Finally, we prospect future visions of breast cancer of oligometastases.