[Sporadic amyotrophic lateral sclerosis. Diagnostic criteria]. / Esclerose lateral amiotrófica esporádica. Critérios diagnósticos.

The authors report two cases of amyotrophic lateral sclerosis (ALS) misdiagnosis (a craniocervical junction disorder, and a cervical spinal cord ependymoma). They review some causes of ALS-like syndrome and propose a protocol to be adopted for the study of all patients who present clinical abnormalities suggesting ALS.