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报告CT导向胸内邻近大血管或直经小于3cm的病灶的经皮针吸活检术20例。这些疑难病灶的径皮活检术操作困难，危险性大，并发症多。本组正确诊断丰85％，其中恶性肿瘤为80％，良性病变为90％。术后小量气胸2例（1％），小量出血1例（5％）。CT扫描能精确确认病灶和穿刺针的位置，并能清楚显示心脏和大血管的轮廓，因此疑难病灶的经皮活检应该在CT导向下操作。
Percutaneous needle aspiration biopsy was reported in 20 patients with CT-guided intracranial adjacent large vessels or lesions less than 3 cm in diameter. These difficult lesions of the radial skin biopsy operation difficult, dangerous, and more complications. 85% of the group correctly diagnosed Feng, including 80% of malignant tumors, benign lesions was 90%. Postoperative small pneumothorax in 2 cases (1%), a small amount of bleeding in 1 case (5%). CT scan can accurately confirm the location of lesions and puncture needle, and can clearly show the outline of the heart and large blood vessels, so difficult lesions percutaneous biopsy should be operated under CT guidance.