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1 病例介绍患者男性,65岁,主诉胸痛,胸闷1个月入院.患者1个月前无明显诱因出现胸痛胸闷,活动和平卧时胸闷加重,偶尔咳嗽,咳少量白痰.查体无异常发现.1.1影像学检查:CT示左后纵隔可见一圆形软组织密度影,CT值16Hμ,大小约14cm×10cm×13cm,边界清,于右后纵隔可见一近卵圆形脂肪密度及软组织密度相混杂影CT值—56～16Hμ,大小约12cm×8cm×4cm,二者分界欠清(图1).MR示在T1加权像上,于左、右后纵隔区分别见一近圆形等T1、长T1(左侧病灶)与近卵圆形短T1、长T1(右侧病灶)混杂信号区,两者分界欠清,大小分别为
1 Case presentation Male patient, 65 years old, complained of chest pain, chest tightness 1 month admitted to the hospital. There was no obvious cause of chest pain and chest distress in the patient 1 month ago, chest tightness worsened when lying in peace and lying, occasional cough, a small amount of white phlegm. No abnormal findings .1.1 Imaging examination: CT shows a circular soft tissue density shadow in the left posterior mediastinum. The CT value is 16Hμ and the size is about 14cm×10cm×13cm. The boundary is clear. A near oval fat density and soft tissue density phase are visible in the right posterior mediastinum. Hybrid CT values -56 ~ 16Hμ, about the size of 12cm × 8cm × 4cm, the boundary between the two is less clear (Figure 1). MR is shown on the T1 weighted image, in the left and right posterior mediastinum respectively see a nearly round and other T1 , long T1 (left lesion) and near oval short T1, long T1 (right lesion) mixed signal area, the boundary between the two is less clear, the size is