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Visual field defects after temporal lobectomy – comparing methods and analysing resection size
Author(s) -
Nilsson D.,
Malmgren K.,
Rydenhag B.,
Frisén L.
Publication year - 2004
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/j.1600-0404.2004.00331.x
Subject(s) - temporal lobectomy , field (mathematics) , resection , medicine , surgery , temporal lobe , mathematics , psychiatry , epilepsy , pure mathematics
Objectives – The frequency of visual field defects (VFD) after temporal lobe resections (TLR) was compared for two types of TLR and VFD frequency was correlated to resection size. Methods – Pre‐ and post‐operative perimetry results were analysed for 50 patients with TLR for medically intractable epilepsy. Thirty‐three patients had a classical TLR and 17 had a TLR with less lateral extension. Post‐operative MRIs were studied in 34 patients by scoring resection size in 12 compartments in the temporal lobe. Results – Twenty‐five patients developed a VFD. In the classical TLR group, 16 of 33 developed a VFD, compared with nine of 17 in the other group. The resection points were higher for the VFD group in the most anterior compartment studied, in the superior temporal gyrus. Conclusions – There was no clearcut difference in VFD frequency between the surgical methods studied. However, the compartmentalized analysis disclosed a relation between the extent of resection in the anterior part of the superior temporal gyrus and VFD frequency.