ABSTRACT
The entities encompassing the syndromes collectively known as myopathies and myositis
are composed of numerous separate and distinct disorders with a vast spectrum of clinical
signs, symptoms, immunopathology, genetic and environmental influences, as well as
overall clinical outcome. Classification of the myositides (diseases of skeletal muscle)
remains a rather controversial subject due to our lack of complete understanding of
this divergent group of disorders. The mainstay of achieving diagnosis of a myopathy
has until relatively recently been with a combination of clinical acumen, laboratory
assessment, electromyography, and muscle biopsy. The use of modern high-resolution
cross-sectional imaging studies is of particular value in confirming the physical
findings and identifying suitable sites for biopsy. Imaging is fast becoming an established
part of the overall evaluation of myopathies and myositis, helping to delineate the
location and extent of the disease process, and it is being recognized as central
to a prompt and accurate diagnosis in some cases. Although radiology has mainly been
seen to have a subsidiary role in the diagnosis of myositides, newer imaging techniques
following recent determined research interests have began to spark a renewed interest
in the complex field of skeletal muscle imaging.
KEYWORDS
Myopathy - myositis - skeletal muscle - MRI - ultrasound
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Waseem A BashirM.R.C.P.(UK)
Department of Radiology, Ealing Hospital NHS Trust
Uxbridge Road, London UB1 3HW UK
Email: wabashir@doctors.net.uk
