Cavum septum pellucidum in monozygotic twins discordant for combat exposure: relationship to posttraumatic stress disorder
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https://doi.org/10.1016/j.biopsych.2003.09.018Metadata
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May, Flavia S, Q.Cece Chen, Mark W Gilbertson, Martha E Shenton, and Roger K Pitman. 2004. Cavum Septum Pellucidum in Monozygotic Twins Discordant for Combat Exposure: Relationship to Posttraumatic Stress Disorder. Biological Psychiatry 55, no. 6: 656–658. doi:10.1016/j.biopsych.2003.09.018.Abstract
BackgroundAbnormally large cavum septum pellucidum has been reported in posttraumatic stress disorder; however, the origin of this association is uncertain.
Methods: We utilized magnetic resonance imaging to measure cavum septum pellucidum in pairs of identical twins discordant for combat exposure in Vietnam. Results: Presence of abnormal cavum septum pellucidum was significantly correlated between exposed and unexposed twins, indicating that it is partially determined by heredity and/or shared environment. There was a greater proportion of cavum septum pellucidum in combat-exposed twins with posttraumatic stress disorder and their noncombat-exposed co-twins. Conclusions: The presence of abnormally large cavum septum pellucidum is a familial vulnerability factor for posttraumatic stress disorder.
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