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Issue title: Special Issue on Biophotonics: Sensing and treatment with ionizing and non-ionizing radiation
Article type: Research Article
Authors: Tranberg, K.-G. | Myllymäki, L. | Möller, P.H. | Ivarsson, K. | Sjögren, H.O. | Stenram, U.
Affiliations: Department of Surgery, | Department of Cell and Molecular Biology, | Department of Pathology, Lund University, S-221 85 Lund, Sweden
Note: [] Corresponding author: Karl-G Tranberg, M.D., Department of Surgery, Lund University, SE-22185 Lund, Sweden. Tel.: +46 46 172767; Fax: +46 46 172335; E-mail: [email protected]
Abstract: The aim of this study was to compare interstitial laser thermotherapy with excision of a liver tumour. A dimethylhydrazine-induced adenocarcinoma was implanted into the left lateral lobe of the rat liver, and treatment was performed 8 days later. Rats were treated with resection of the tumour-bearing lobe or underwent interstitial laser thermotherapy, which was performed at a steady-state temperature of 46°C for 30 min, 3 mm from the tumour margin. The incidence and extent of intraperitoneal spread was smaller after laser thermotherapy than after resection, with no difference in local control. Using inoculation of tumour cell suspensions into the lateral and the median lobes of the liver simultaneously and treating the lateral lobe tumour only, we found that laser thermotherapy reduced take and growth of the untreated tumour in the median lobe indicating that laser thermotherapy may induce immunologic effects. It is concluded that interstitial laser thermotherapy reduces spread of liver tumour as compared to resection. It is suggested that this can be at least partly explained by a laser-induced immunologic effect.
Journal: Journal of X-Ray Science and Technology, vol. 10, no. 3-4, pp. 177-185, 2002
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