title: A false-positive edrophonium test in a patient with a brainstem glioma.
abstract: We report a photographically documented false-positive edrophonium test in a patient with a histologically verified brainstem glioma. While a positive response to intravenous edrophonium should usually be regarded as confirmatory for myasthenia gravis, the possibility of a false-positive test must be considered in patients with atypical physical findings.
authors.affiliation: Department of Neurology, Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, NC 27103.
authors.forename: L Y
authors.initials: LY
authors.lastname: Dirr
authors.forename: P D
authors.initials: PD
authors.lastname: Donofrio
authors.forename: J F
authors.initials: JF
authors.lastname: Patton
authors.forename: B T
authors.initials: BT
authors.lastname: Troost
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology; D001933:Brain Stem; D003937:Diagnosis, Differential; D004491:Edrophonium; D005189:False Positive Reactions; D005260:Female; D005910:Glioma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D009157:Myasthenia Gravis / Q000175:diagnosis*
chemical_list: D004491:Edrophonium