Cancer and disorders of motor neurons.
D000690:Amyotrophic Lateral Sclerosis / Q000175:diagnosis / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D009046:Motor Neurons / Q000648:ultrastructure; D009468:Neuromuscular Diseases / Q000175:diagnosis* / Q000473:pathology; D010257:Paraneoplastic Syndromes / Q000175:diagnosis*; D013116:Spinal Cord / Q000473:pathology