已有应用荧光透视引导作胸内肿块细针穿刺抽吸活检。但当病变接近纵隔、横膈及肺尖部表面时,常可致穿刺失败,且易并发气胸。在其间不含骨结构及含气肺组织时超声显像技术可以对邻近横膈或胸壁的肿块作出定位。因此,作者对透视引导穿刺失败或可能失败的病例应用超声显像引导穿刺活检,并对其临床价值进行评价. A fluoroscopy guide has been used for fine needle aspiration biopsy of intrathoracic masses. However, when the lesion approaches the mediastinum, diaphragm, and apex of the lung, puncture failure can often be caused and pneumothorax is easily complicated. Ultrasound imaging can locate the masses adjacent to the diaphragm or chest wall without bone structures and air-containing lung tissue therebetween. Therefore, the author applied ultrasound imaging-guided biopsy to evaluate the clinical value of puncture-guided failed or potentially failed puncture.