Analysis of multi-slice spiral CT features of mediastinal bronchial cysts

BAI Yufeng; NIU Juanqin; LIU Kang; YUE Lina; HU Gawei; DU Jinchen

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Medical Journal of the Chinese People Armed Police Forces ›› 2026, Vol. 37 ›› Issue (4) : 311-315.

ORIGINAL ARTICLES

Analysis of multi-slice spiral CT features of mediastinal bronchial cysts

BAI Yufeng¹, NIU Juanqin¹, LIU Kang¹, YUE Lina¹, HU Gawei², DU Jinchen²

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Abstract

Objective To analyze the multi-slice spiral CT (MSCT) imaging features of mediastinal bronchial cysts (MBC) to guide clinical diagnosis and differential diagnosis. Methods A retrospective analysis was conducted on the MSCT features of 31 cases of MBC with complete clinical data and confirmed by surgery and pathology. The location, morphology, density, margin, cyst wall, degree of enhancement, etc. of the lesions in the mediastinum were observed and classified, and compared with previous literatures. Results For the first time, it was found that the anterior mediastinum was a new predominant distribution area of MBC (13/31, 41.9%), and the location was significantly correlated with the density (P=0.032), with a low-density proportion of 53.8% (OR=4.08). Three-dimensional morphological analysis showed that 96.8% (30/31) of the cases had a characteristic “ellipsoid-like” morphology, and 48.4% (15/31) of the cases showed a “ellipsoid-like - parallel vascular sign” composite sign, with the long axis consistent with the course of adjacent vessels. There was no enhancement on enhanced scanning. Conclusions The combination of features such as anatomical-density association, ellipsoid morphological index and parallel vascular sign can improve the diagnostic accuracy of MBC.

Key words

mediastinum / bronchogenic cyst / mediastinal cyst / tomography / multi-slice spiral CT

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BAI Yufeng, NIU Juanqin, LIU Kang, YUE Lina, HU Gawei, DU Jinchen. Analysis of multi-slice spiral CT features of mediastinal bronchial cysts[J]. Medical Journal of the Chinese People Armed Police Forces. 2026, 37(4): 311-315

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