类风湿性关节炎为一病因不明,病期较长、病变时轻时重的全身性疾患。典型的病变常侵犯外周性小关节,有25％以上的患者喉部受累,而尸检证实喉部关节受累者可高达50～80％。主要瘸理改变,早期为滑膜炎,关节渗出和滑膜增生,细胞浸润。临床上可能无症状或有疼痛和敏感,喉粘膜红肿,由于关节运动受限而发声困难。治 Rheumatoid arthritis is a disease of unknown etiology, longer duration of illness, severe systemic disease when light. A typical lesion invading peripheral small joints, more than 25% of patients with laryngeal involvement, autopsy confirmed laryngeal joint involvement may be as high as 50 to 80%. Mainly lameness changes, early synovitis, joint exudation and synovial hyperplasia, cell infiltration. Clinically asymptomatic or painful and sensitive, throat mucosal swelling, due to limited articulation and vocal difficulties. rule