Russell N A, del Carpio-O'Donovan R, Mallya K B, Benoit B G, Belanger G
Can J Neurol Sci. 1987 May;14(2):172-4. doi: 10.1017/s0317167100026342.
Although relatively uncommon, interhemispheric subdural hematoma (ISDH) occurs more frequently than was suspected before the advent of computerized tomographic (CT) scanning. When its mass is sufficiently large to compress the medial cerebral hemisphere, specific focal neurological abnormalities may occur. These include weakness of the contralateral leg, or contralateral hemiparesis with the leg being weaker than the arm. On the unenhanced CT scan ISDH is seen as a crescent shaped, midline hyperdensity. Treatment is dictated by the clinical course. Evacuation of the hematoma by parasagittal craniotomy is recommended if the symptoms are pronounced.
虽然相对不常见，但大脑镰旁硬膜下血肿（ISDH）的发生率比计算机断层扫描（CT）出现之前所怀疑的要高。当血肿足够大以压迫大脑半球内侧时，可能会出现特定的局灶性神经功能异常。这些异常包括对侧腿部无力，或对侧偏瘫且腿部比手臂更无力。在未增强的CT扫描上，ISDH表现为新月形的中线高密度影。治疗取决于临床病程。如果症状明显，建议通过矢状窦旁开颅术清除血肿。
