31. Mimicking amyotrophic lateral sclerosis: cervical spondylotic myelopathy

Article type: CME Quiz                                                                                            
Article title: Mimicking amyotrophic lateral sclerosis: cervical spondylotic myelopathy

Journal: Current Medical Issues
Year: 2019
Authors: Jamir Pitton Rissardo, Ana Letícia Fornari Caprara           
E-mail: jamirrissardo@gmail.com

ABSTRACT
An 80yearold male was admitted to our hospital for urinary catheter change. The patient stated that he went to other clinic 1 year ago because he had experienced progressive weakness in all extremities and leaky bladder. The neurological examination at that time showed a wheelchair patient with weakness in the upper and lower limbs, fasciculations in the upper limb, left plantar extension, and hyperreflexia in the upper and lower limbs. Laboratory tests and brain magnetic resonance imaging (MRI) were normal. A diagnosis of amyotrophic lateral sclerosis (ALS) was made, and riluzole 50 mg twice daily was started. On followup, he reported relative improvement of urinary incontinence and deambulation. On admission in our hospital, after the urinary catheter was changed, he also mentioned cervicalgia with >6 months of onset. His family history was unremarkable. Physical examination showed a wheelchair patient with the previous neurological signs described in addition to decreased tactile sensitivity. Laboratory tests were within normal limits. Electromyography showedincreased insertional activity, sharp positive waves, fasciculations, and a diminished motor unit recruitment with prolonged central motor conduction time. In addition, sensory amplitudes and velocities in the upper limb were abnormal. A cervical MRI was requested.
Keywords: Amyotrophic lateral sclerosis, cervical spondylotic myelopathy, spondylosis, diagnosis

Full text available at:

DOI
10.4103/cmi.cmi_36_19

Citation
Rissardo JP, Caprara AL. Mimicking amyotrophic lateral sclerosis: cervical spondylotic myelopathy. Curr Med Issues 2019;17:155-6