Radioactivity thresholds for sentinel node biopsy in breast cancer

European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology
S MorotaFujio Kasumi

Abstract

The aim of the present study is to clarify the level of radioactive lymph node should be biopsied after the most radioactive SN is removed. SNB using radionuclide was performed in our hospital for 1179 primary breast cancers between April 2000 and October 2005; most (1177/1179) were performed successfully. Our criterion for harvesting SNs is to remove tissue until no radioactive site is present. The level of radioactivity and the order of removal of each lymph node were compared with pathologic results. More than 2 (overall average 1.9) radioactive SNs were biopsied in 686 of 1177 breasts. Cancer positive results were recorded for 142 breasts with multiple SNs. In 142 breasts, 64 showed metastasis to the most radioactive node only, 39 showed metastasis other than the most radioactive node only, and 39 showed the most radioactive node and other radioactive nodes. Moreover, if several other criteria were applied, false-positive cases were increased significantly. It is necessary to harvest radioactive lymph nodes other than the most radioactive. Moreover, efforts to remove every radioactive lymph node will minimize false-negative results.

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Citations

Jul 15, 2015·Molecular and Clinical Oncology·Yoshihisa YaguchiKazuo Hase
Apr 25, 2012·World Journal of Gastrointestinal Surgery·Stefano RauseiRenzo Dionigi

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