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摘要


本病例為一隻三歲大已絕育之雌性混種犬,因顳顎關節之活動範團漸進性縮減而就醫,臨床上發現病患頭部雙側之顳肌及咬肌呈現明顯且嚴重的萎縮。為病患進行單側顳顎關節切除術及給予短暫類固醇治療後,症狀獲得改善,但停用類固醇後,無法開嘴的症狀隨即復發。經由血清學檢驗,病患體內含有高量之2M抗體,最終診斷為咬肌炎(masticatory muscle myositis)。病患對於免疫抑制劑量之類圍醇有良好的治療反應,顳顎關節回復到完全正常的開嘴程度。目前病患之類固醇正在緩慢減量,對治療之成效亦於長期追蹤當中。

關鍵字

咬肌 肌炎:牙關緊閉

並列摘要


A 3-year-old, spayed female, mixbred dog was referred to the National Taiwan University Veterinary Teaching Hospital with an 8-month history of progressively decreased opening range of the mouth. The dog showed severe bilateral atrophy of the temporalis and masseter muscles. Unilateral mandibular condylectomy and short-term steroid had been given with some benefit. However, symptoms recurred after the steroid therapy was discontinued. Owing to the presence of a high serum antibody titer to type 2M muscle fibers, masticatory muscle myositis was diagnosed. The patient showed an excellent response to the immunosuppressive dosage of prednisolone with symptoms completely resolved. She is currently under long-term follow-up and the given dose of prednisolone is gradually tapering.

並列關鍵字

Dog masticatory muscle myositis trismus

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