Pure agraphia of kanji due to thrombosis of the Labbe vein.
Open Access
- 1 April 1990
- journal article
- case report
- Published by BMJ in Journal of Neurology, Neurosurgery & Psychiatry
- Vol. 53 (4), 335-338
- https://doi.org/10.1136/jnnp.53.4.335
Abstract
A case is described of a 56 year old Japanese male with pure agraphia of kanji (the Japanese morphograms) due to haemorrhagic infarction of the left temporal lobe caused by the rare condition of cortical vein thrombosis of Labbé. Writing kanji was severely impaired without disturbed consciousness, aphasia or apraxia. On the other hand, writing kana (the Japanese syllabograms), and reading kanji and kana were almost intact. This suggests that the process of writing kanji involves a different pathway from that of reading kanji in the left temporal lobe. Pure agraphia of kanji is considered to be similar to lexical agraphia in Indo-European languages, in that the writing system with a poor or irregular phoneme-grapheme transformation is impaired by the left temporal lesion. This case indicates the necessity for considering thrombosis of the Labbé vein when a subcortical haematoma is detected in a temporal lobe on computed tomography of the brain.Keywords
This publication has 13 references indexed in Scilit:
- Pure Alexia in Japanese and Agraphia Without Alexia in KanjiArchives of Neurology, 1988
- Alexia with agraphia of kanji (Japanese morphograms).Journal of Neurology, Neurosurgery & Psychiatry, 1987
- Phonological agraphiaNeurology, 1983
- Pure agraphia and unilateral optic ataxia associated with a left superior parietal lobule lesionJournal of Neurology, Neurosurgery & Psychiatry, 1981
- PHONOLOGICAL AGRAPHIA AND THE LEXICAL ROUTE IN WRITINGBrain, 1981
- LEXICAL OR ORTHOGRAPHIC AGRAPHIABrain, 1981
- Pure agraphia: a discrete form of aphasia.Journal of Neurology, Neurosurgery & Psychiatry, 1979
- Writing disturbances in acute confusional statesNeuropsychologia, 1972
- Speech and Brain MechanismsLanguage, 1960
- Ein Fall von reiner motorischer AgraphieArchiv Fur Psychiatrie Und Nervenkrankheiten, 1922