neurogenic muscle atrophy; denervation atrophy

Introduction

muscle atrophy resulting from denervation; affected fibers are small, angulated & tend to be clustered.

Etiology

• brachial plexus compromise may result in muscle atrophy of the ipsilateral hand
  • pancoast tumor (NSCLC)
• stroke

Radiology

• chest X-ray if brachial plexus involvement suspected
• neuroimaging if suspected stroke

More general terms

• muscle atrophy (amyotrophy)

More specific terms

• diabetic amyotrophy/lumbar polyradiculopathy; diabetic lumbosacral radiculoplexus neuropathy (DLRPN)

Additional terms

• spinal muscular atrophy (SMA)