Lewis-Sumner Syndrome Mimicking Idiopathic Brachial Plexopathy: A Case Report with Electrophysiological, Ultrasonographic, and Magnetic Resonance Imaging Findings
Multifocal acquired demyelinating sensory and motor neuropathy (MADSAM), also known as Lewis-Sumner syndrome, is a rare subtype of chronic inflammatory demyelinating polyradiculoneuropathy. We report a patient who initially presented with features suggestive of idiopathic brachial plexopathy and was ultimately diagnose...