Abstract
The validity and clinical usefulness of the sentinel node (SN) concept for breast cancer has been confirmed, and individualized limited surgery based on diagnosis of SN metastasis is presently performed. In the future, SN navigation surgery (SNNS) will be actively applied to the treatment of early gastric cancer, and an intraoperative real-time reverse transcription-polymerase chain reaction (RT-PCR) assay to detect SN micrometastasis of gastric cancer is under development. Not only anatomical factors, but also many other factors such as local immunosuppression in the SN and lymphoangiogenesis may be involved in development of SN micrometastasis, and clarification of the mechanisms of metastasis and development of treatment methods are awaited. (*English Translation of J Jpn Col Angiol 2008; 48: 137-142.).
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