Holtås S, Heiling M, Lönntoft M
Department of Radiology, University Hospital, Lund, Sweden.
Radiology. 1996 May;199(2):409-13. doi: 10.1148/radiology.199.2.8668786.
To evaluate radiologic findings and clinical data in patients with spontaneous spinal epidural hematoma (SSEH).
Thirteen patients (10 men aged 28-71 years; three women aged 40-65 years) with SSEH from 1986 to 1995 underwent magnetic resonance (MR) imaging; six also underwent spinal angiography. Patients with minor trauma, anticoagulant therapy, increased bleeding tendency, or vascular lesions were included.
The incidence was estimated to be 0.1 patients per 100,000 patients per year. On MR images, the hematoma was in the anterior (n=8) or posterior (n=4) epidural space or both (n=1). The most common location was the upper thoracic region. T1-weighted images were most useful owing to the pathognomonic signal shift from isointensity with the cord in the early period to hyperintensity in the intermediate stage. Five patients had minor trauma, and four were receiving anticoagulant therapy.
A rough estimation of the incidence of SSEH is provided,and the results confirm the previously described association with minor trauma and anticoagulant therapy and low frequency of arteriovenous malformations.
评估自发性脊髓硬膜外血肿（SSEH）患者的影像学表现和临床资料。
1986年至1995年间，13例（10名男性，年龄28 - 71岁；3名女性，年龄40 - 65岁）SSEH患者接受了磁共振（MR）成像检查；6例还接受了脊髓血管造影。纳入有轻微创伤、抗凝治疗、出血倾向增加或血管病变的患者。
估计发病率为每年每10万名患者中有0.1例。在MR图像上，血肿位于硬膜外前间隙（n = 8）或后间隙（n = 4）或两者均有（n = 1）。最常见的部位是上胸段。T1加权图像最有用，因为其具有特征性的信号变化，早期与脊髓等信号，中期变为高信号。5例患者有轻微创伤，4例正在接受抗凝治疗。
提供了SSEH发病率的粗略估计，结果证实了先前描述的与轻微创伤、抗凝治疗的关联以及动静脉畸形的低发生率。
