White matter and surgical approaches to the lateral ventricle

摘要

Background: To reach tumors the lateral ventricle, surgeons must use strategies to avoid white matter fascicles. Transcortical approaches can threaten optic radiations or arcuate fasciculus. Materials and methods: 20 human brains were examined. Klingler's fiber dissection method was applied. Results: The optic radiations ran within the middle temporal gyrus under the inferior longitudinal fasciculus. The arcuate fasciculus or superior longitudinal fasciculus encircled the sylvian fissure and covered the atrium. Conclusion: The inferior horn can be reached by a corticectomy in the superior temporal gyrus preserving the language area and the visual pathways. The parietal transcortical approach avoided the speech areas but threatens the arcuate fasciculus, especially in dominant hemisphere.