Tomaszek D E, Tyson G W, Mahaley M S
Surg Neurol. 1983 Jul;20(1):71-3. doi: 10.1016/0090-3019(83)90111-8.
Two cases of radiographically isodense subdural hematoma are presented in which absence of displacement of midline cerebral structures was due not to bilateral lesions, but rather to "balancing" of the volumetric effect of a unilateral lesion by preexisting encephalomalacia. Attention to the past medical history and the computed tomography scan which showed evidence of unilateral loss of brain substance led to the proper diagnosis.
本文报告两例影像学表现为等密度的硬膜下血肿病例,其中脑中线结构未发生移位并非由于双侧病变,而是由于先前存在的脑软化对单侧病变的容积效应起到了“平衡”作用。关注既往病史以及计算机断层扫描显示的单侧脑实质缺失证据,从而得出了正确诊断。