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患者女，24岁，体检时发现左下纵隔肿物6个月，偶有胸闷。体格检查及实验室检查未见异常。胸部CT片显示左后纵隔可见一9cm×7cm肿物，密度不均匀，边缘清楚。增强CT片显示肿物内有通向肿物的血管影。B超显示在左膈肌上缘探及大小约9.1cm×7.5cm×6.5cm肿物，内有大小不等的强回
Female patient, 24 years old, physical examination found that the left lower mediastinal mass 6 months, occasionally chest tightness. Physical examination and laboratory tests showed no abnormalities. Chest CT showed left posterior mediastinoscopy can be seen a 9cm × 7cm tumor, uneven density, clear edge. Enhanced CT scan showed the tumor within the tumor leading to the blood vessels. B ultrasound showed the upper edge of the left diaphragm and explore the size of about 9.1cm × 7.5cm × 6.5cm tumor, ranging from strong back