Low-power interstitial laser photocoagulation for breast cancer

Simon A. Harries; Zahir Amin; William R. Lees M.D.; J. Cooke; Mark Smith; Martin Cook; John H. Scurr; Mark W. Kissin; Stephen G. Bown

doi:10.1117/12.168018

1 February 1994 Low-power interstitial laser photocoagulation for breast cancer

Simon A. Harries, Zahir Amin, William R. Lees M.D., J. Cooke, Mark Smith, Martin Cook, John H. Scurr, Mark W. Kissin, Stephen G. Bown

Author Affiliations +

Proceedings Volume 2077, Laser Interaction with Hard and Soft Tissue; (1994) https://doi.org/10.1117/12.168018
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary

Abstract

Interstitial laser photocoagulation (ILP) is a new minimally invasive technique which can produce localized necrosis in the center of solid organs. Breast cancer can now be treated safely in selected patients by lumpectomy followed by radiotherapy. Taking the concept of conservative treatment a step further would it be possible to destroy breast cancers in situ leaving the area to heal by resorption and fibrosis? Thirty seven patients with early breast cancer scheduled for surgery underwent ILP in the interval between diagnosis and surgery. The technique was performed under local anaesthesia, and ultrasound (US) used to place an optical fiber into the tumor. Treatment was curtailed in 4 patients because of pain. Thermal necrosis varied from 2 - 25 mm as measured microscopically but in 4 patients no necrosis was evident. No complications arose as a result of treatment. When charring was present in the excised tumor a larger diameter of necrosis was evident than when charring was absent (mean 15 mm vs 5 mm) and a study in 10 patients using a pre-charred fiber produced a more predictable and larger diameter of necrosis (mean 17 mm). Ultrasound did not accurately predict the extent of laser induced necrosis (although it was better at predicting tumor size).

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Simon A. Harries, Zahir Amin, William R. Lees M.D., J. Cooke, Mark Smith, Martin Cook, John H. Scurr, Mark W. Kissin, and Stephen G. Bown "Low-power interstitial laser photocoagulation for breast cancer", Proc. SPIE 2077, Laser Interaction with Hard and Soft Tissue, (1 February 1994); https://doi.org/10.1117/12.168018

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