Callosal alien hand sign following a right parietal lobe infarction.
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.
Kim
Young-Do
YD
Department of Neurology, The Catholic University of Korea, St. Mary's Hospital, 505, Banpo-dong, Seocho-gu, Seoul 137-701, South Korea.
Lee
Eek-Sung
ES
Lee
Kwang-Soo
KS
Kim
Joong-Seok
JS
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