title: Deficits on self ordered tasks associated with hyperostosis frontalis interna.
abstract: A 74 year old patient, EW, with dorsolateral frontal cortical compression due to hyperostosis frontalis interna, in the absence of the Morgagni or Stewart-Morel syndromes, is described. In addition to conventional neuropsychological measures EW was administered one nonspatial and two spatial self ordered working memory tasks, as well as a standard measure of fluid intelligence or g. She showed impaired performance on all three self ordered working memory tasks compared with a normal control group of 10 subjects matched for age, education, sex, and IQ. By contrast, her performance on the fluid intelligence test was comparable with that of the controls. It is concluded that the compression of dorsolateral frontal cortex accompanying hyperostosis frontalis interna may produce selective cognitive impairment.
authors.affiliation: Centre for Magnetic Resonance, The University of Queensland, Australia.
authors.forename: G I
authors.initials: GI
authors.lastname: de Zubicaray
authors.forename: J B
authors.initials: JB
authors.lastname: Chalk
authors.forename: S E
authors.initials: SE
authors.lastname: Rose
authors.forename: J
authors.initials: J
authors.lastname: Semple
authors.forename: G A
authors.initials: GA
authors.lastname: Smith
mesh_terms: D000368:Aged; D003072:Cognition Disorders / Q000175:diagnosis / Q000209:etiology*; D005625:Frontal Lobe / Q000473:pathology; D006801:Humans; D006957:Hyperostosis Frontalis Interna / Q000150:complications* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D014888:Wechsler Scales