Post E M, Modesti L M
J Neurosurg. 1981 Nov;55(5):761-5. doi: 10.3171/jns.1981.55.5.0761.
Although subdural empyema (SDE) has long been a recognized postoperative complication, little has been written to suggest that SDE's following operative procedures are different from those occurring in patients who have not had previous surgery. Four cases of postoperative SDE are reported which seem to have several distinguishing features and are grouped under the title of "subacute" subdural empyemas. These include: occurrence in a previous craniotomy site, a prolonged course, the insidious onset of symptoms, and the absence of signs of constitutional illness. The presence of an inner subdural membrane which limits the size of the empyema and separates it from the underlying brain is thought to be the reason for the relatively benign nature of the presenting symptoms and the extremely good prognosis. Computerized tomography scanning was not able to provide a preoperative diagnosis of empyema in any case.
尽管硬膜下积脓（SDE）长期以来一直被认为是一种术后并发症，但很少有文献表明手术后发生的SDE与未接受过先前手术的患者所发生的情况有所不同。本文报告了4例术后SDE病例，这些病例似乎有几个显著特征，并被归类为“亚急性”硬膜下积脓。这些特征包括：发生在先前开颅手术部位、病程延长、症状隐匿起病以及无全身疾病体征。存在一层硬膜下内膜，它限制了积脓的大小并将其与下方的脑组织分隔开，这被认为是出现相对良性症状和极佳预后的原因。在任何病例中，计算机断层扫描都无法在术前诊断出积脓。
