CT棘突征对周围型肺癌的诊断价值

The significance of spiculated sign on CT in the diagnosis of peripheral lung cancer

目的探讨肺内孤立结节球形灶棘突CT征对周围型肺癌的诊断与鉴别诊断价值。方法47例经临床手术病理和抗炎治疗后证实的孤立型肺结节中,周围型肺癌32例,肺良性病变15例。所有病例从肺尖至肺底扫描,层厚8mm,依病灶大小,加扫薄层4mm,部分病例(35例)经肘静脉注射对比剂对病灶行增强薄层扫描。对棘突CT征与周围型肺癌CT表现的病理基础及鉴别诊断进行了讨论。结果周围型肺癌的棘突CT征发生率为66%(21/32),比其它肺良性病变20%(3/15)高。结论肺内孤立结节灶棘突CT征对周围型肺癌的诊断与鉴别诊断具有重要价值,是诊断肺癌的一个指征。

Objective to determine the significance of spiculated sign on CT images of solitary pulmonry nodules (SPN) in the diagnosis of peripheral lung cancer (PLC).Methods Forty-seven patients with pathologically and clinically (anti -inflammatory treatment)proven SPNs those were 32 cases of PLC and 15 cases of pulmonary benign lesion (PBL)underwent CT studies .CT scans of the chest were performed using 8 mm intervals from apex pulmonis to basis pulmonis.Additional 4 mm thin slices were made according to the lesion size.For partial pulmonary lesions,thin section CT was performed after intravenous bolus injection of the contrast.The significance of spiculated on CT in the diagnosis of PLC and its pathologic base were discussed.Results Spiculated signs on CT were found in 21 of 32 patients (66 %) with PLC and 3 of 15 patients (20 %) with PBL and the difference between the incidence of both was very significant (P< 0.01).Conclusion Spiculated sign on CT is a reliable evidence to diagnose PLC.