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KMID : 1103720100630060525
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Journal of the Korean Society of Radiology
2010 Volume.63 No. 6 p.525 ~ p.530
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Perifissural Air Seen in the Pneumomediastinum on MDCT: the Incidence and Clinical Features
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Oh Soo-Jin
Kim Young-Tong
Jou Sung-Shick
Shin Hyung-Chul
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Abstract
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Purpose: We wanted to evaluate the incidence and clinical features of perifissural air seen in the pneumomediastinum on CT.
Materials and Methods : The study included the CT scans of 90 patients with pneumomediastinum (65 males and 25 females) and who had been treated during the recent 3 years. The ages ranged from 2 to 48 years (mean age: 41 years). The patients were divided into 3 groups, I: perifissural air (n=7), II: pneumomediastinum without perifissural air (n=83) and III: pulmonary interstitial emphysema involving the peribronchial or intraparenchymal area (n=9) of the Group II. We analyzed the clinical data and compared it between group I and the other groups.
Results: Group I included 7.8% of the total cases. Age was statistically different between Group I and II, but age was not significantly different between Groups I and III (I: 13.7 years, II: 42.9, III: 26.4). A spontaneous cause was the most common (57.2%) in Group I, trauma (33.7%), postoperative occurrence (20.5%) and a spontaneous cause (9.7%) were common in Group II, and trauma (44.4%) and a spontaneous cause (33.3%) were common in Group III. The incidence of a spontaneous cause was statistically different between Groups I and II (p<0.001), but this was not significantly different between Groups I and III.
Conclusion: The incidence of perifissural air seen in the pneumomediastinum on CT is 7.8%. Perifissural air is more common in the younger patients with a spontaneous cause.
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KEYWORD
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Mediastinal Emphysema, Pulmonary Emphysema, Tomography, X-Ray Computed
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