Subacute Severe Pelvis and Anterior Thigh Pain

A 55-year-old diabetic woman presented with subacute severe right pelvis and anterior thigh pain that was followed by weakness of bilateral quadriceps. Two months later, she experienced weakness of the hip flexors. She had no ankle or knee reflexes. Lumbar spine MRI showed mild degenerative disease of the spines. Her diabetes mellitus was well controlled.


The most likely diagnosis is:

1. LS polyradiculopathy

2. Vasculitis

3. Atypical polymyositis

4. Diabetic amyotrophy

5. Arachnoiditis

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Case selected from Dr. Shaibani’s Video Atlas of Neuromuscular Diseases, available from Oxford University Press.

Aziz Shaibani, MD, FACP, FAAN, FANA is Director of Nerve & Muscle Center of Texas. He is also Clinical Professor of Medicine at Baylor College of Medicine in Houston and is an Adjunct Professor of Neurology at Kansas University Medical Center in Kansas City, KS.