Abstract: The present invention relates to an improved apparatus for a therapeutic treatment of malignant solid tumors, consisting of a combined photodynamic therapy and hyperthermic treatment, said apparatus comprising a lamp possessing a narrow beam light, a mirror, an optical glass lenses system, a dicroic filter, a glass fiber optics bundle and an effective air-cooling system. This apparatus provides the administration of between 100 to 150 mw/cm.sup.2 of red radiation in the range of between 600 to 750 nm band at a temperature of up to 46.degree. C. Clinical results from three different hospitals show that by using this apparatus a success of more than 85% was achieved even after one single treatment.

Abstract: The invention relates to an apparatus for an efficient photodynamic therapy treatment. The apparatus comprises the following parts: (a) a lamp possessing a narrow beam light with half angle divergence up to 10.degree., possessing an intensity of at least 2 mW/nm with a spectral region in the range of 610 to 750 nm; (b) a glass lens to focus the beams of the light; (c) a red filter possessing a transmittance of 0.95 which provides a spectral region of above 610 nm, and (c) a light guide in the range of 3 to 12 mm diameter, which provides a minimum irradiance of 50 mW/cm.sup.2. According to a preferred embodiment the lamp is provided with a fixed internal reflector. In order to transmit the useful radiation and to remove the heat produced by the infra-red radiation, a 45.degree. dicroic mirror is attached to the apparatus.