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Updated: Apr 22, 2026

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
Published on: December 18, 2016
Hirayama disease: imaging profile of three cases emphasizing the role of flexion MRI
Radha Sarawagi1, Sathya Narayanan2, Prakash Manikka Lakshmanan3
1Associate Professor, Department of Radiodiagnosis, Mahatma Gandhi Medical College & Research Institute , Pillaiyarkuppam, Pondicherry, India .
Abstract:
We report three cases of Hirayama disease, cervical flexion myelopathy presenting as unilateral or bilateral asymmetric muscular atrophy of forearm and hand involving C7 - T1 myotomes in young males. MRI revealed asymmetric cord atrophy, altered signal intensity of cord, posterior dural detachment and enlarged posterior epidural space with multiple flow voids. This article emphasizes the role of Flexion MRI in diagnosing Hirayama disease.
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