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Continue to ChatBallondilatation: eine Behandlung bei chronischer Sinusitis. Chronic sinusitis is a common condition where the cavities around the nasal passages (sinuses) become inflamed and swollen lasting for at least 12 weeks, despite treatment attempts. https://www.theportugalnews.com/de/nachrichten/2021-04-30/ballondilatation-eine-behandlung-bei-chronischer-sinusitis/59617