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Treatment of cancer by intravenous injection of a photosensitizing agent, such as hematoporphyrin, followed by exposure to visible light of superficial tumors or of deep tumors by a fiberoptic probe.
photochemotherapy/pho·to·che·mo·ther·a·py/ (-ke″mo-ther´ah-pe) treatment by means of drugs (e.g., methoxsalen) that react to ultraviolet radiation or sunlight.
Etymology: Gk, phos + chemeia, alchemy, therapeia, treatment
Bright light therapy, see there.
A therapy in which various conditions (colorectal cancer, cutaneous T-cell lymphoma, head and neck cancer, Kaposi sarcoma, psoriasis, skin cancer) are treated by light after previous administration of the agent haemoporphyrin.
photochemotherapyExtracorporeal photochemotherapy, photopheresis, phototherapy Oncology A therapy in which a photosensitizer–eg, a hematoporphyrin derivative, is administered, post light exposure; PCT is used to eradicate, or ↓ size of superficial transitional cell carcinomas of the urinary bladder, systemic sclerosis and other autoimmune diseases
Treatment of cancer by intravenous injection of a photosensitizing agent (e.g., hematoporphyrin), followed by exposure to visible light of superficial tumors or of deep tumors by a fiberoptic probe.
photochemotherapyuse of light (e.g. ultraviolet light) together with drugs (e.g. psoralen) to treat skin diseases (e.g. treatment of psoriasis with psoralens and long-wave ultraviolet light [PUVA])
treatment by means of drugs (e.g. methoxsalen) that react to ultraviolet radiation or sunlight.