title: Seropositive myasthenia gravis associated with small-cell lung carcinoma.
abstract: BACKGROUND
  Lambert-Eaton myasthenic syndrome is well known to be a classical paraneoplastic syndrome of small cell lung carcinoma (SCLC). Three cases of seronegative myasthenia gravis (MG) and SCLC were previously reported.
  
  
  METHODS
  A 65-year-old man developed a severe progressive respiratory failure with clinical features of MG. Tests showed a decremental response in the repetitive nerve stimulation test, abnormal single-fiber electromyography, and positive acetylcholine receptor antibody. SCLC was confirmed by the lung biopsy.
  
  
  CONCLUSIONS
  This case represents the first case of seropositive MG and SCLC.
authors.affiliation: Department of Neurology, Keiyo University Medical School, Tokyo, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ohira
authors.forename: Dushin
authors.initials: D
authors.lastname: Jeong
authors.forename: Shin J
authors.initials: SJ
authors.lastname: Oh