title: Segmental neurogenic muscle hypertrophy associated with radiation injury.
abstract: A 48-year-old man presented with painless left trapezius hypertrophy 20 years after radiotherapy for nasopharyngeal carcinoma. EMG sampling showed myokymic discharges, reduced polyphasic motor unit recruitment and no signs of active denervation. The relationship between radiotherapy, brachial plexopathy and neurogenic muscle hypertrophy is discussed.
authors.affiliation: Department of Neurology, Singapore General Hospital, Outram Road, Singapore 169608, Singapore.
authors.forename: M P
authors.initials: MP
authors.lastname: Gorkhaly
authors.forename: Y L
authors.initials: YL
authors.lastname: Lo
mesh_terms: D002277:Carcinoma / Q000532:radiotherapy; D004576:Electromyography; D006801:Humans; D006984:Hypertrophy / Q000209:etiology; D008297:Male; D008875:Middle Aged; D018908:Muscle Weakness / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D018482:Muscle, Skeletal / Q000473:pathology* / Q000503:physiopathology*; D020385:Myokymia / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D009303:Nasopharyngeal Neoplasms / Q000532:radiotherapy; D011832:Radiation Injuries / Q000150:complications*