肉芽腫性多血管炎(granulomatosis with polyangiitis, GPA)是系統性血管炎的一種,主要侵犯小血管。該疾病目前之病生理機轉仍不清楚,常侵犯上、下呼吸道、腎臟、神經系統、皮膚系統等。這種疾病常以非特異性系統性症狀表現,包括發燒、疲倦、食慾減退、體重下降等,因此時常被當作感染、關節炎及惡性疾病診療。透過典型器官侵犯、血清檢驗、器官切片檢驗出典型病灶達成診斷。此類疾病主要透過糖皮質素及免疫調節劑進行治療。
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