Spontaneous pneumomediastinum and Macklin effect:Overview and appearance on computed tomography

作     者：Sadayuki Murayama Shinji Gibo 

作者机构：Department of RadiologyGraduate School of Medical ScienceUniversity of the RyukyusOkinawa 903-0215Japan Department of RadiologyUrasoe General HospitalOkinawa 901-2132Japan 

出 版 物：《World Journal of Radiology》 (世界放射学杂志（英文版）（电子版）)

年 卷 期：2014年第6卷第11期

页      面：850-854页

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 100207[医学-影像医学与核医学] 1006[医学-中西医结合] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 100106[医学-放射医学] 100602[医学-中西医结合临床] 10[医学] 

主　　题：Pneumomediastinum Spontaneous pneumomediastinum Computed tomography Macklin effect Interstitial emphysema 

摘      要：Spontaneous pneumomediastinum(SPM) is described as free air or gas located within the mediastinum that is not associated with any noticeable cause such as chest *** has been associated with many conditions and triggers,including bronchial asthma,diabetic ketoacidosis,forceful straining during exercise,inhalation of drugs,as well as other activities associated with the Valsalva *** Macklin effect appears on thoracic computed tomography(CT) as linear collections of air contiguous to the bronchovascular *** the recent availability of multidetector-row CT,the Macklin effect has been seen in the clinical setting more frequently than *** aim of this review article is to describe the CT imaging spectrum of the Macklin effect in patients with SPM,focusing on the common appearance of the Macklin effect,pneumorrhachis,and persistent SPM with pneumatocele.