{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T01:31:57Z","timestamp":1773797517124,"version":"3.50.1"},"reference-count":32,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:sec><jats:title>OBJECTIVE<\/jats:title><jats:p>The best approach to deep-seated lateral and third ventricle lesions is a function of lesion characteristics, location, and relationship to the ventricles. The authors sought to examine and compare angles of attack and surgical freedom of anterior ipsilateral and contralateral interhemispheric transcallosal approaches to the frontal horn of the lateral ventricle using human cadaveric head dissections. Illustrative clinical experiences with a contralateral interhemispheric transcallosal approach and an anterior interhemispheric transcallosal transchoroidal approach are also related.<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS<\/jats:title><jats:p>Five formalin-fixed human cadaveric heads (10 sides) were examined microsurgically. CT and MRI scans obtained before dissection were uploaded and fused into the navigation system. The authors performed contralateral and ipsilateral transcallosal approaches to the lateral ventricle. Using the navigation system, they measured areas of exposure, surgical freedom, angles of attack, and angle of view to the surgical surface. Two clinical cases are described.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>The exposed areas of the ipsilateral (mean [\u00b1 SD] 313.8 \u00b1 85.0 mm<jats:sup>2<\/jats:sup>) and contralateral (344 \u00b1 87.73 mm<jats:sup>2<\/jats:sup>) interhemispheric approaches were not significantly different (p = 0.12). Surgical freedom and vertical angles of attack were significantly larger for the contralateral approach to the most midsuperior reachable point (p = 0.02 and p = 0.01, respectively) and to the posterosuperior (p = 0.02 and p = 0.04) and central (p = 0.04 and p = 0.02) regions of the lateral wall of the lateral ventricle. Surgical freedom and vertical angles of attack to central and anterior points on the floor of the lateral ventricle did not differ significantly with approach. The angle to the surface of the caudate head region was less steep for the contralateral (135.6\u00b0 \u00b1 15.6\u00b0) than for the ipsilateral (152.0\u00b0 \u00b1 13.6\u00b0) approach (p = 0.02).<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>The anterior contralateral interhemispheric transcallosal approach provided a more expansive exposure to the lower two-thirds of the lateral ventricle and striothalamocapsular region. In normal-sized ventricles, the foramen of Monro and the choroidal fissure were better visualized through the lateral ventricle ipsilateral to the craniotomy than through the contralateral approach.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2017.1.jns161338","type":"journal-article","created":{"date-parts":[[2017,8,4]],"date-time":"2017-08-04T13:59:10Z","timestamp":1501855150000},"page":"1492-1502","source":"Crossref","is-referenced-by-count":11,"title":["Quantitative anatomical comparison of the ipsilateral and contralateral interhemispheric transcallosal approaches to the lateral ventricle"],"prefix":"10.3171","volume":"128","author":[{"given":"Evgenii","family":"Belykh","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"},{"name":"Division of Neurosurgery, University of Arizona, Tucson, Arizona; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kaan","family":"Ya\u011fmurlu","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ting","family":"Lei","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sam","family":"Safavi-Abbasi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark E.","family":"Oppenlander","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nikolay L.","family":"Martirosyan","sequence":"additional","affiliation":[{"name":"Division of Neurosurgery, University of Arizona, Tucson, Arizona; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vadim A.","family":"Byvaltsev","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Irkutsk State Medical University, Irkutsk, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert F.","family":"Spetzler","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Nakaji","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark C.","family":"Preul","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, St. Joseph\u2019s Hospital and Medical Center, Phoenix;"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1","series-title":"World Neurosurg","doi-asserted-by":"publisher","first-page":"e397","DOI":"10.1016\/j.wneu.2012.07.015","article-title":"Trans-striatocapsular contralateral interhemispheric resection of anterior inferior basal ganglia cavernous malformation","volume":"80","author":"Abla AA","year":"2013","unstructured":"Abla AA, Spetzler RF, Albuquerque FC: Trans-striatocapsular contralateral interhemispheric resection of anterior inferior basal ganglia cavernous malformation. 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