J Korean Radiol Soc.  2007 Feb;56(2):155-160. 10.3348/jkrs.2007.56.2.155.

CT Findings of Swyer-James-MacLeod Syndrome in Adults: Are There Any Different Findings with Aging?

• Kang MJ
• Kim JS
• Kim JY
• Kim SH
• Jeong MJ
• Kim SH
• Kim JH
• Bae SJ
• Woo JJ

• KMID: 2024497
• DOI: http://doi.org/10.3348/jkrs.2007.56.2.155

Abstract

PURPOSE
We wanted to evaluate whether there is any different finding on CT with aging for the patients suffering with adult Swyer-James-MacLeod Syndrome (SJMS).
MATERIALS AND METHODS
We included 11 patients (7 males and 4 females) who underwent chest CT scan among 18 patients who were suspected of suffering with SJMS on chest radiographs. The range of age was from 28 to 85 years (mean: 58.5). We evaluated the diameter of both the main pulmonary artery (MPA) with its ratio, and the diameter of the pulmonary trunk (PT) to evaluate the possibility of pulmonary arterial hypertension, and the presence or absence of bronchiectasis. We also evaluated the relationships between these findings and aging.
RESULTS
SJMS affected the left lung in 10 of 11 patients. The mean diameter of the main pulmonary artery of the normal lung was 2.5 cm and it was 1.6 cm in the involved site. The mean ratio of the normal MPA diameter to the involved one was 1.6 and this did not correlate with age (p>0.1). The mean diameter of the pulmonary trunk was 2.8 cm and this increased with age (p<0.05). There was bronchiectasis in 6 of 11 patients, and the ratio of bronchiectasis did not correlate with age (p>0.5).
CONCLUSION
SJMS absolutely affected the left lung much more than the right lung. All the patients demonstrated about 1.6 times the compensatory hypertrophy of MPA of the normal lung compared with that of the affected lung on chest CT, which was irrespective of age. The presence or absence of bronchiectasis has no correlation with age.

Keyword

Lung, CT; Lung, air trapping; Pulmonary arteries; Bronchiolitis; Bronchiectasis

MeSH Terms

Adult*
Aging*
Bronchiectasis
Bronchiolitis
Humans
Hypertension
Hypertrophy
Lung
Male
Pulmonary Artery
Radiography, Thoracic
Tomography, X-Ray Computed