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Take two: Utility of the repeat skeletal muscle biopsy
Author(s) -
Aburahma Samah K.,
Wicklund Matthew P.,
Quan Dianna
Publication year - 2019
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.26484
Subject(s) - muscle biopsy , biopsy , medicine , polymyositis , myositis , nerve biopsy , myalgia , inclusion body myositis , pathology , peripheral neuropathy , endocrinology , diabetes mellitus
: The utility of repeat muscle biopsy has not been adequately evaluated. Methods : A retrospective review was undertaken of 144 repeat muscle biopsies performed from 1980 to 2017. Repeat biopsy was considered clinically relevant if it provided a new diagnosis, changed the existing diagnosis, or led to treatment changes or further investigations. Results : Repeat biopsy was abnormal in 118 cases, different from the initial biopsy in 67 cases, and specific in 40 cases. Factors with a significant effect on clinical relevance of the repeat biopsy ( P < 0.05) were an abnormal, specific, or inflammatory initial biopsy, proximal muscle weakness, absence of myalgia, and a repeat biopsy that is different, specific, or consistent with polymyositis or inclusion body myositis. Conclusions : Utility of repeat biopsy was limited to weak patients whose initial biopsy showed inflammatory myositis. Ongoing advances in the diagnosis of immune inflammatory myopathies have led to evolution of the role of repeat biopsy. Muscle Nerve , 2019