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Interstitial Nd:YAG laser coagulation with a cylindrical diffusing fiber tip in experimental liver metastases
R van Hillegersberg1, H J van Staveren, W J Kort
1Department of Surgery, Erasmus University Medical Faculty, Rotterdam, The Netherlands.
Lasers in Surgery and Medicine
|January 1, 1994
Summary
Interstitial laser coagulation effectively destroys liver tumors. This study demonstrates its potential for selective cancer treatment with minimal liver damage.
Area of Science:
- Oncology
- Medical Engineering
- Hepatology
Background:
- Hepatic metastases pose a significant challenge in cancer treatment.
- Effective and selective methods for destroying liver tumors are crucial.
Purpose of the Study:
- To investigate the efficacy of interstitial laser coagulation (ILC) for hepatic metastases destruction.
- To evaluate the safety and impact of ILC on liver function and surrounding tissue.
Main Methods:
- Colon carcinoma CC531 liver metastases were induced in rats.
- Tumors were treated with Nd:YAG laser at varying energy levels (600–4,800 J/cm).
- Tumor response, liver damage, and liver function were assessed post-treatment.
Main Results:
- ILC induced coagulation necrosis of treated tumors.
- Lesion size and liver enzymes increased with laser energy, but liver function remained intact.
- Complete tumor remission was observed in 3 of 4 animals at the highest energy (4,800 J/cm).
Conclusions:
- Interstitial laser coagulation is a viable method for selective destruction of colonic tumors in the liver.
- The technique shows promise for treating hepatic metastases with a favorable safety profile.