等密度硬膜下血肿(LSDH)系指CT上硬膜下血肿的密度与邻近脑实质,主要是脑皮质密度相近,边界不清.其临床上容易误漏诊.CT检查在确诊本病方面具有重大意义.经手术证实的19例LSDH,就其CT特点分析如下.临床资料一、资料19例中男性18例,女性1例;年龄为44~80岁(平均63．84岁),>55岁16例.从出现症状到CT检查时间为34~270天,其中3~7天14例.呈现偏瘫及肢体无力、麻木15例,头痛14例,失语2例.6例有明确头部外伤史. Isodenal hematoma (LSDH) refers to the density of subdural hematoma on CT and adjacent brain parenchyma, mainly cortical density similar to the border is unclear, its clinical easy to miss a diagnosis .CT examination in the diagnosis of the disease has Significant .19 cases confirmed by surgery LSDH, on its CT characteristics are as follows.Clinical data A, 19 cases of information in 18 males and 1 females; aged from 44 to 80 years (mean, 63.84 years),> 55 Year-old in 16. From symptom to CT examination time was 34 to 270 days, of which 14 cases of 3 to 7 days, showing hemiplegia and limb weakness, numbness in 15 cases, headache in 14 cases, aphasia in 2. 6 cases of clear head trauma history.