Wu Carol C, Cronin Carmel G, Chu Julia T, Halpern Elkan F, Sahani Dushyant V, Shepard Jo-Anne O, Gilman Matthew D
Department of Radiology, Massachusetts General Hospital, Boston, MA, USA.
J Comput Assist Tomogr. 2012 Nov-Dec;36(6):641-5. doi: 10.1097/RCT.0b013e31826a0de2.
To review the characteristics and outcome of incidental pulmonary nodules reported on abdominal computed tomography (CT).
A database search of abdominal CTs from January 1, 2004, to December 31, 2006, revealed 413 patients with incidental pulmonary nodules and at least one follow-up chest CT. Demographic information, nodule characteristics, and eventual outcome of the nodules were analyzed.
Of the 413 patients, 56% had benign nodules, 11% had malignant nodules, and the remaining 33% had insufficient follow-up. There was a statistically significant difference (P < 0.05) in the age of the patients, history of malignancy, and size of the incidental nodule between benign and malignant groups. No malignant nodules were found in patients younger than 59 years who did not have a known or suspected malignancy.
Small pulmonary nodules (<8 mm) on abdominal CT in patients younger than 50 years with no history of malignancy are unlikely to be malignant.
回顾腹部计算机断层扫描（CT）报告的偶然发现的肺结节的特征及转归。
对2004年1月1日至2006年12月31日期间的腹部CT进行数据库检索，发现413例有偶然发现的肺结节且至少有一次随访胸部CT的患者。分析了人口统计学信息、结节特征以及结节的最终转归。
在这413例患者中，56%有良性结节，11%有恶性结节，其余33%随访不足。良性和恶性组患者的年龄、恶性肿瘤病史以及偶然发现结节的大小存在统计学显著差异（P<0.05）。在年龄小于59岁且无已知或疑似恶性肿瘤的患者中未发现恶性结节。
在年龄小于50岁且无恶性肿瘤病史的患者中，腹部CT上的小肺结节（<8mm）不太可能是恶性的。
