The importance of training surgeons who subspecialize in cancer surgery is supported by
clinical trials showing that surgical oncology outcomes are positively correlated with surgeon volume. In other words, surgeons who treat more
cancer cases tend to become more proficient, and their patients often experience improved survival rates. This is another controversial point, but it is generally accepted—even as common sense—that a surgeon who performs a given operation more often, will achieve superior results when compared with a surgeon who rarely performs the same procedure. This is particularly true of complex cancer resections such as,
Breast Cancer Surgery,
pancreaticoduodenectomy (Whipple procedure) for pancreatic cancer, and
gastrectomy with extended (D2)
lymphadenectomy for gastric cancer. In the United States and Canada, fellowship trained surgical oncologists have among the longest training periods of any physicians/surgeons. In some areas like
Breast Diseases and
Breast Cancer there we know as Breast Surgeon the specialist that only works with patients with
breast diseases and
breast cancer. A training period (clinical and research) of 6 to 8 years is typical and 8–10 years is not uncommon. ==Surgical oncology types and forms==