title: Pathologic quiz case: male with chronic progressive painless muscle weakness.
authors.affiliation: Department of Neurology, Cleveland Clinic Florida, Fort Lauderdale, USA.
authors.forename: Eric F
authors.initials: EF
authors.lastname: Ciliberti
authors.forename: Richard A
authors.initials: RA
authors.lastname: Prayson
mesh_terms: D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D018908:Muscle Weakness / Q000209:etiology; D018979:Myositis, Inclusion Body / Q000175:diagnosis / Q000473:pathology*