Endoscopic Nd: YAG Laserthermia: Experimental Study on Carcinoma-Bearing BDF1 Mice

Clinically laserthermia has proved to be safer and more reliable than conventional contact-laser irradiation in eradicating tumour tissue. Since the differences in the mechanism of tumour destruction are still not fully understood, we compared these methods in an experimental study using BDF₁ mice and obtained the following results: 1)There are differences in the process of carcinoma cell destruction between laserthermia (low power, long time) and contact irradiation (high power, short time).2)Laser-light itself has the ability to cause carcinoma cell destruction.3)Changes due to laserthermia become detectable histologically 3 h after irradiation.