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Abstract
Twenty-nine female patients with definite or classical rheumatoid arthritis (RA) and 30 controls were studied in order to assess the prevalence of laryngeal involvement in patients with RA and the occurrence of extrathoracic airway obstruction. Laryngeal involvement was assessed by physical examination including direct fiberoptic laryngoscopy, respiratory function tests and low-voltage radiography. Physical examination revealed laryngeal involvement in 17 RA patients (59%). extrathoracic airway obstruction was indicated by spirometry in 4 (14%) and radiography revealed pathological findings in 3 patients (10%). One or more signs of laryngeal involvement were found in 20 patients (69 %). Symptoms of breathing difficulties were common (75%) among patients with laryngeal involvement. the erythrocyte sedimentation rate and class-specific rheumatoid factors were not correlated to laryngeal involvement.