METHOD OF TREATING LOCALLY ADVANCED OROPHARYNGEAL CANCER Russian patent published in 2015 - IPC A61N5/10 A61K31/417 A61K31/734 A61K36/45 A61P35/00 A61P43/00 

FIELD: medicine.

SUBSTANCE: treating locally advanced oropharyngeal cancer is ensured by a radiation therapy in the mode of dynamic dose fractionation. The radiation therapy is started by supplying a fraction dose of 2.4 Gy. After 2 days of treatment gap, the patient is exposed to total fractions at a fraction dose of 3.6Gy for three days. Each session is precede by placing high-structure hydrogel matrix of sodium alginate under a patient's tongue with metronidazole 150mg and bilberry 20-35mg pre-introduced into the matrix, for 4-5 hours twice every 1-2 hours. The two following sessions of the exposure at a fraction dose of 2.4 Gy are preceded by placing the matrix once under the tongue for 4-5 hours. After 2 days of treatment gap, the following 5 sessions of the radiation therapy are performed at a fraction dose of 2.4 Gy to a cumulative dose of 30Gy. Colegel-DNA-Ch high-structure disk is preliminary placed under the tongue for 4-5 hours.

EFFECT: method enables avoiding the compulsory gaps of the radiation therapy by reducing a rate of severe local radiation reactions, and provides the target delivery and accurate dosage of metronidazole administered into the patient's body leading to the partial death of well-oxygenated cells and re-oxygenation of hypoxic tumour cells.

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