Simultaneous presence of the "bullseye" and "reversed halo" sign at CT of COVID-19 pneumonia: A case report.

Radiology Case Reports
Athanasios GiannakisKatharina Hellbach

Abstract

The "bullseye" sign has been exclusively reported in patients suffering from coronavirus disease 2019 (COVID-19) pneumonia. It is theorized that this newly recognized computed tomography (CT) feature represents a sign of organizing pneumonia. Well established signs of organizing pneumonia also reported in COVID-19 patients include linear opacities, the "reversed halo" sign (or "atoll" sign), and a perilobular distribution of abnormalities. These findings are usually present on imaging in the intermediate and late stage of the disease. This is a case of simultaneous presence of the "bullseye" and the "reversed halo" sign on chest CT images of a COVID-19 patient examined 22 days after symptom onset.

References

Nov 15, 2003·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Santiago E RossiH Page McAdams
Jan 25, 2020·The New England Journal of Medicine·Na ZhuUNKNOWN China Novel Coronavirus Investigating and Research Team
Mar 27, 2020·European Radiology·Zhiming ZhouWenbing Zeng
Apr 4, 2020·Radiology·Damiano CarusoAndrea Laghi
May 6, 2020·Medizinische Klinik, Intensivmedizin und Notfallmedizin·Qianna JinGuoyi Lv
Aug 28, 2020·Clinical Imaging·Thomas A McLarenDaniel B Green
Oct 24, 2020·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Thomas C Kwee, Robert M Kwee

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