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CT findings of COVID-19 in follow-up: comparison between progression and recovery.
Diagn Interv Radiol. 2020 Jul; 26(4):301-307.DI

Abstract

PURPOSE

We aimed to retrospectively analyze the imaging changes detected in the follow-up of coronavirus disease 2019 (COVID-19) patients on thin-section computed tomography (CT).

METHODS

We included 54 patients diagnosed with COVID-19. The mean interval between the initial and follow-up CT scans was 7.82±3.74 days. Patients were divided into progression and recovery groups according to their outcomes. We evaluated CT images in terms of distribution of lesions and imaging manifestations. The manifestations included ground-glass opacity (GGO), crazy-paving pattern, consolidation, irregular line, and air bronchogram sign.

RESULTS

COVID-19 lesions showed mainly subpleural distribution, which was accompanied by bronchovascular bundle distribution in nearly 30% of the patients. The lower lobes of both lungs were the most commonly involved. In the follow-up, the progression group showed more involvement of the upper lobe of the left lung than the recovery group. GGO was the most common sign. As the disease progressed, round GGO decreased and patchy GGO increased. On follow-up CT, consolidation increased in the progression group while decreasing in the recovery group. Air bronchogram sign was more commonly observed at the initial examination (90.9%) than at follow-up (30%) in the recovery group, but there was no significant change in the progression group. Pleural effusion and lymphadenopathy were absent in the initial examination, but pleural effusion was observed in three cases after follow-up.

CONCLUSION

As COVID-19 progressed, round GGOs tended to evolve into patchy GGOs, consolidation increased, and pleural effusion could be occasionally observed. As COVID-19 resolved, the crazy-paving pattern and air bronchogram significantly decreased.

Authors+Show Affiliations

Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China;Chun-Shuang Guan and Lian-Gui Wei contributed equally to this work.Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China;Chun-Shuang Guan and Lian-Gui Wei contributed equally to this work.Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

32436847

Citation

Guan, Chun-Shuang, et al. "CT Findings of COVID-19 in Follow-up: Comparison Between Progression and Recovery." Diagnostic and Interventional Radiology (Ankara, Turkey), vol. 26, no. 4, 2020, pp. 301-307.
Guan CS, Wei LG, Xie RM, et al. CT findings of COVID-19 in follow-up: comparison between progression and recovery. Diagn Interv Radiol. 2020;26(4):301-307.
Guan, C. S., Wei, L. G., Xie, R. M., Lv, Z. B., Yan, S., Zhang, Z. X., & Chen, B. D. (2020). CT findings of COVID-19 in follow-up: comparison between progression and recovery. Diagnostic and Interventional Radiology (Ankara, Turkey), 26(4), 301-307. https://doi.org/10.5152/dir.2019.20176
Guan CS, et al. CT Findings of COVID-19 in Follow-up: Comparison Between Progression and Recovery. Diagn Interv Radiol. 2020;26(4):301-307. PubMed PMID: 32436847.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - CT findings of COVID-19 in follow-up: comparison between progression and recovery. AU - Guan,Chun-Shuang, AU - Wei,Lian-Gui, AU - Xie,Ru-Ming, AU - Lv,Zhi-Bin, AU - Yan,Shuo, AU - Zhang,Zi-Xin, AU - Chen,Bu-Dong, PY - 2020/5/22/pubmed PY - 2020/8/4/medline PY - 2020/5/22/entrez SP - 301 EP - 307 JF - Diagnostic and interventional radiology (Ankara, Turkey) JO - Diagn Interv Radiol VL - 26 IS - 4 N2 - PURPOSE: We aimed to retrospectively analyze the imaging changes detected in the follow-up of coronavirus disease 2019 (COVID-19) patients on thin-section computed tomography (CT). METHODS: We included 54 patients diagnosed with COVID-19. The mean interval between the initial and follow-up CT scans was 7.82±3.74 days. Patients were divided into progression and recovery groups according to their outcomes. We evaluated CT images in terms of distribution of lesions and imaging manifestations. The manifestations included ground-glass opacity (GGO), crazy-paving pattern, consolidation, irregular line, and air bronchogram sign. RESULTS: COVID-19 lesions showed mainly subpleural distribution, which was accompanied by bronchovascular bundle distribution in nearly 30% of the patients. The lower lobes of both lungs were the most commonly involved. In the follow-up, the progression group showed more involvement of the upper lobe of the left lung than the recovery group. GGO was the most common sign. As the disease progressed, round GGO decreased and patchy GGO increased. On follow-up CT, consolidation increased in the progression group while decreasing in the recovery group. Air bronchogram sign was more commonly observed at the initial examination (90.9%) than at follow-up (30%) in the recovery group, but there was no significant change in the progression group. Pleural effusion and lymphadenopathy were absent in the initial examination, but pleural effusion was observed in three cases after follow-up. CONCLUSION: As COVID-19 progressed, round GGOs tended to evolve into patchy GGOs, consolidation increased, and pleural effusion could be occasionally observed. As COVID-19 resolved, the crazy-paving pattern and air bronchogram significantly decreased. SN - 1305-3612 UR - https://www.unboundmedicine.com/medline/citation/32436847/CT_findings_of_COVID_19_in_follow_up:_comparison_between_progression_and_recovery_ L2 - https://doi.org/10.5152/dir.2019.20176 DB - PRIME DP - Unbound Medicine ER -