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Immune Mediated Necrotizing Myopathy: a Cause of Isolated Myopathy of Neck Extensor Muscle
被引:2
|作者:
Sehgal, Rahul
[1
]
Medina-Flores, Rafael
[2
]
Yachoui, Ralph
[1
]
Kenney, Charles V.
[3
]
机构:
[1] Marshfield Clin Fdn Med Res & Educ, Dept Rheumatol, 1000 North Oak Ave, Marshfield, WI 54449 USA
[2] Marshfield Clin Fdn Med Res & Educ, Dept Lab Pathol, Marshfield, WI USA
[3] Marshfield Clin Fdn Med Res & Educ, Dept Radiol, Marshfield, WI USA
关键词:
Myositis/diagnosis/therapy;
Neck muscles/physiopathology;
Neuromuscular diseases;
Polymyositis/physiopathology;
D O I:
10.3121/cmr.2016.1318
中图分类号:
R5 [内科学];
学科分类号:
1002 ;
100201 ;
摘要:
Immune mediated necrotizing myopathy (IMNM) is a unique form of myositis that is characterized by distinct muscle biopsy features including abundant myofiber necrosis, degeneration, and regeneration with only minimal, if any, inflammation on muscle biopsy. IMNM is clinically similar to idiopathic inflammatory myopathy (IIM); hence, muscle biopsy is essential to diagnose IMNM. Herein we describe a case of neck extensor weakness due to necrotizing myopathy. Isolated weakness of the neck extensor muscles is uncommon in IIM and IMNM. This case describes the diagnostic work-up, treatments utilized, and 2 year follow-up course without involvement of other muscle groups and without progression of neck extensor muscle weakness. Advanced imaging using magnetic resonance imaging (MRI) facilitated the diagnosis by identifying the affected muscles and site for muscle biopsy.
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页码:145 / 150
页数:6
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