Synonyms for Myasthenic Syndrome (same or very similar meaning)
WordNet sense 1 (a disease seen in patients with lung cancer and characterized by weakness and fatigue of hip and thigh muscles and an aching back; caused by antibodies directed against the neuromuscular junctions):
Lambert-Eaton syndrome, carcinomatous myopathy, Eaton-Lambert syndromeFrom the ODE community, based on WordNetadd/edit