Comparison of anomalous systemic artery to left lower lobe and pulmonary sequestration in left lower lobe by computed tomography.

Abstract

BACKGROUND:

Differentiation of anomalous systemic artery to the left lower lobe (ASALLL) from pulmonary sequestration (PS) is essential, as ASALLL can be corrected by anastomosis, embolization, or ligation of the anomalous artery.

PURPOSE:

To compare computed tomography (CT) findings of ASALLL and PS in the left lower lobe (LLL).

MATERIALS AND METHODS:

This study included 16 patients with ASALLL and 25 patients with PS in LLL confirmed by operative and pathologic findings.

RESULTS:

Cough and sputum were more common in PS (84% and 60%, respectively) than in ASALLL (25% and 12.5%, respectively) (P < 0.05). Hemoptysis was more common in ASALLL (100%) than in PS (24%) (P < 0.05). The frequency of ground glass opacity (GGO), normal bronchial distribution, dilated left inferior pulmonary veins, and absence of the interlobar artery distal to the origin of the superior segmental artery in LLL differed significantly between ASALLL and PS. Mass was less common in ASALLL (0%) than in PS (88%) (P < 0.01). The mean diameter of the anomalous artery (11.88 ± 1.13 mm) in ASALLL was significantly larger than that (5.96 ± 0.98 mm) in PS (P < 0.01). The presence of anomalous artery arising from thoracic aorta was not different between ASALLL (100%) and PS (72%).

CONCLUSION:

Radiographic indications of ASALLL differ from those of PS in the LLL. Indications that may suggest ASALLL include an enlarged anomalous systemic artery arising from the thoracic aorta, dilated left inferior pulmonary veins, absence of the interlobar artery distal to the origin of the superior segmental artery, normal bronchial distribution, and GGO in the LLL.

• Authors: Jie Qin, Xiao-li Wang, Ming-jun Bai, Shao-hong Huang, Xiu-zhen Chen, Hong Shan
• Journal: Acta radiologica (Stockholm, Sweden : 1987) (Acta Radiol) Vol. 56 Issue 9 Pg. 1100-4 (Sep 2015) ISSN: 1600-0455 [Electronic] England
• PMID: 25168022 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © The Foundation Acta Radiologica 2014.

Chemical References

• Contrast Media
• Iohexol
• iopromide

Topics

• Adult
• Bronchopulmonary Sequestration (diagnostic imaging, surgery)
• Contrast Media
• Female
• Humans
• Iohexol (analogs & derivatives)
• Male
• Pneumonectomy
• Pulmonary Artery (abnormalities)
• Pulmonary Veins (abnormalities)
• Tomography, X-Ray Computed (methods)