Disco spotlight sign: A sign that may be useful for diagnosis of pneumomediastinum

作者:Chen, Yi Chin; Wu, Bor Hen; Lin, Chun Lung; Yeh, Yu Hang; Wu, Yi Ching; Hung, Tzu Yao*
来源:American Journal of Emergency Medicine, 2017, 35(11): 1786.e1.
DOI:10.1016/j.ajem.2017.07.086

摘要

The use of ultrasonography for the investigation of pneumomediastinum is limited by the presence of air artifacts. Air accumulation in the mediastinum obscures the heart, sometimes leading to misinterpretation as lung tissue. We found that cardiac apical swinging during the heart cycle, however, can create a uniquely characteristic squeezing of mediastinal free air, producing a sonographic B-line that flashes in and out. We named this dynamic finding, the "disco spotlight" sign. This finding may be useful to confirm the diagnosis of pneumomediastinum.

  • 出版日期2017-11

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