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目的：增加小儿疑似肺结核的确诊依据。方法回顾分析3例经皮低剂量CT引导下肺穿刺诊断肺结核患儿的临床资料，对其临床、影像、肺穿刺组织病理学特点进行总结。结果3例患儿均有不同程度的发热、咳嗽、消瘦、乏力，PPD试验及痰涂片均阴性，临床疑似但不能明确诊断为肺结核，经皮低剂量CT引导下肺穿刺明确诊断为肺结核。结论临床上疑似肺结核，诊断困难时可以考虑经皮低剂量CT引导下肺穿刺，以明确诊断。“,”Objective To increase the diagnosis basis of children with suspected tuberculosis.Methods Retrospective analysis of 3 cases of pulmonary tuberculosis diagnosed by percutaneous transthoracic needle biopsy.The clinical,imaging,and lung biopsy for histopathologic features are summarized.Results 3 patients had different degree of fever,cough,emaciation,and hypodynamia,PPD test and sputum smear negative,clinically suspected but not clearly diagnosed as pulmonary tuberculosis,low doses of CT guided percutaneous lung puncture for the deifnitive diagnosis of pulmonary tuberculosis.Conclusion The diagnosis clinically suspected pulmonary tuberculosis is difficult,but the percutaneous lung puncture guided by low dose CT could try,to confirm the diagnosis.