title: Callosal alien hand sign following a right parietal lobe infarction.
abstract: Callosal alien hand syndrome is characterized primarily by intermanual conflict and is associated with an anterior callosal lesion. We report a patient who presented with topographical disorientation and the callosal type alien hand sign. An MRI of the brain showed a right parietal lobe infarction. This is a rare example of callosal alien hand sign associated with a right parietal lesion. The right parietal lobe appeared to be responsible for the callosal hand sign in this patient, possibly due to interference with peristriate outflow pathways toward the parietal zones, where visual somatosensory interactions are likely to occur.
authors.affiliation: Department of Neurology, The Catholic University of Korea, St. Mary's Hospital, 505, Banpo-dong, Seocho-gu, Seoul 137-701, South Korea.
authors.forename: Young-Do
authors.initials: YD
authors.lastname: Kim
authors.forename: Eek-Sung
authors.initials: ES
authors.lastname: Lee
authors.forename: Kwang-Soo
authors.initials: KS
authors.lastname: Lee
authors.forename: Joong-Seok
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000369:Aged, 80 and over; D055964:Alien Limb Phenomenon / Q000209:etiology*; D020520:Brain Infarction / Q000150:complications* / Q000473:pathology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D010296:Parietal Lobe / Q000473:pathology*; D014741:Video Recording / Q000379:methods