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Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
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Published on: December 18, 2016

Diabetic myopathy: MRI patterns and current trends.

Brady K Huang1, Johnny U V Monu, John Doumanian

  • 1Department of Imaging Sciences, University of Rochester Medical Center, NY 14642, USA.

AJR. American Journal of Roentgenology
|June 23, 2010
PubMed
Summary

Diabetic myopathy, common in type 2 diabetes, presents with varied muscle involvement and imaging findings on MRI. Diagnosis is possible via MRI, avoiding invasive biopsy in patients with diabetes complications.

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Area of Science:

  • Radiology
  • Endocrinology
  • Musculoskeletal Imaging

Background:

  • Diabetic myopathy is a recognized complication of diabetes mellitus.
  • Its MRI characteristics and prevalence, particularly in type 2 diabetes, require further elucidation.

Purpose of the Study:

  • To retrospectively evaluate diabetic myopathy in a large hospital population.
  • To describe MRI findings, muscle involvement patterns, and correlate with clinical parameters.

Main Methods:

  • Retrospective review of lower extremity MRI reports (July 1999-January 2006).
  • Analysis of clinical data including diabetes type, HbA1c, CK, ESR, and complications (nephropathy, neuropathy, retinopathy).
  • Assessment of muscle distribution and imaging features.

Main Results:

  • 16 patients (21 extremities) evaluated; 88% had type 2 diabetes.
  • Thigh anterior compartment involved in all cases; calf posterior compartment in 90%.
  • Muscle infarction/necrosis seen in 38%; elevated CK, ESR, HbA1c common; high rates of nephropathy, neuropathy, retinopathy.

Conclusions:

  • Diabetic myopathy may be more frequent in type 2 diabetes than previously thought.
  • MRI findings are consistent, suggesting contrast agents may be unnecessary due to coexisting nephropathy.
  • Typical clinical and MRI findings allow confident diagnosis, potentially avoiding biopsy.