Rapid progressive focal myositis of the head and neck region: a case report

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  • Kitazawa Yu
    Department of Neurology, Tokyo Metropolitan Neurological Hospital
  • Kondo Koichi
    Department of Neurology, Tokyo Metropolitan Neurological Hospital
  • Sugaya Keizo
    Department of Neurology, Tokyo Metropolitan Neurological Hospital
  • Mizutani Toshio
    Metropolitan Fuchu Medical Center for Severe Motor and Intellectual Disabilities
  • Matsubara Shiro
    Department of Neurology, Tokyo Metropolitan Neurological Hospital

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Other Title
  • 頭頸部におきた急速進行性局在性筋炎の1例
  • 症例報告 頭頸部におきた急速進行性局在性筋炎の1例
  • ショウレイ ホウコク アタマ ケイブ ニ オキタ キュウソク シンコウセイキョクザイセイ キンエン ノ 1レイ

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Abstract

A 46-year-old woman noticed a painful lump in the neck following fluctuating multiple arthralgia in the previous 3 months. The neck nodule grew rapidly, and was associated with an elevation of the serum creatine kinase activity. Under a diagnosis of focal myositis, corticosteroids were introduced, soon resulting in an amelioration of the symptoms. A biopsy from the neck nodule revealed a muscle tissue with scattered foci of densely packed inflammatory cells. Some of the cells had features similar to the granuloma, which were compact collection of cells and partial tendency of the cell fusion. These findings suggest a close relation between some cases focal myositis and granulomatous myopathy.

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