title: Adult onset glycogen storage disease type II (adult onset  Pompe disease): report and magnetic resonance images  of two cases.
abstract: Glycogen storage disease type II (GSDII), also referred to as Pompe disease or acid maltase deficiency, is a rare inherited condition caused by a deficiency in acid alpha-glucosidase (GAA) enzyme activity (Tinkle andLeslie. GeneReviews, 2008. http://www.genetests.org). The condition is often classified by age of presentation,with infantile and late onset variants (Laforet et al. J Neurology 55:1122-8, 2000). Late onset tends to present with progressive proximal muscle weakness and respiratory insufficiency (Winkel et al. J Neurology 252:875-84, 2005). We report two cases of biopsy confirmed adulto nset GSDII, along with key Magnetic Resonance (MR) images.
authors.affiliation: Emory University School of Medicine, 1648 Pierce Drive, Atlanta, GA 30322, USA. adelgai@emory.edu
authors.forename: Andrew
authors.initials: A
authors.lastname: Del Gaizo
authors.forename: Sima
authors.initials: S
authors.lastname: Banerjee
authors.forename: Michael
authors.initials: M
authors.lastname: Terk
mesh_terms: D000328:Adult; D005260:Female; D006009:Glycogen Storage Disease Type II / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged