Eustachian tube dysfunction in patients with nasopharyngeal carcinoma, pre- and post-irradiation

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Abstract
Summary Eustachian tube function tests were performed in 34 patients with nasopharyngeal carcinoma before and after irradiation. Tubal dysfunction prior to irradiation in these patients was due to functional impairment. However, tubal dysfunction after irradiation was due to both organic obstruction and functional impairment. Organic obstruction of the tube was found to be severe with higher dosages of irradiation (to 80 Gy) resulting in subsequent otitis media. In our experience, higher doses of irradiation should be avoided if possible, but insertion of a ventilation tube should be done if a high dose of irradiation is planned.

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