耳鼻咽喉科領域におけるCryosurgeryの適応症について

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Experimental and clinical studies of cryosurgery were conducted for the determination of cryo effects in the otolaryngological field. Several basic problems regarding the action of the freezing in causing tissue necrosis were investigated histologically and physiologically using Torisha cryobar. The mechanisms of cell death caused by cryosurgery are through dehydration and concentration of electrolytes resulting from removal of water, denaturation of protein molecules, rupture of the cell membrane, thermal shock and vascular stasis. Studies show that the mass of tissue affected depends upon the temperature. Cryonecrosis of tissue obtained when the temperature below -17 to -20°°C in the tissue. An area of reversibility will surround the destroyed tissue if the temperature of the tissue appears to be over -17 to -20°C. Clinical cases demonstrated were papilloma, tongue cancer, habitual tonsillitis, Meniere diseases and hemangioma of the tongue. Results were as follows: (1) Cryosurgery has proved a safe surgical technique. (2) The proper application of cryoprobe is readily learned and easily applied. (3) The treatment takes much less time and patients do not need to stay in the hospital when the unilateral cryotonsillectong is performed. (4) Lack of pain and bleeding are some of the advantages of cryosurgery. (5) Cryosurgery is most useful for senile patients and also for diseases located locally in the otolaryngological field such as demonstrated in the cases above (6) The modality of the tumors should be observed by pysicians treating malignant diseases by cryosurgery.
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耳鼻咽喉科領域におけるCryosurgeryの適応症について

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