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Information Journal Paper

Title

Lobar Distribution of COVID-19 Pneumonia Based on Chest Computed Tomography Findings; A Retrospective Study

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  0-0

Abstract

 Introduction: Computed tomography (CT) imaging has quickly found its place as a beneficial tool in the detection of coronavirus disease 2019 (COVID-19). To date, only a few studies have reported the distribution of lung lesions by segment. This study aimed to evaluate the lobar and segmental distribution of COVID-19 pneumonia based on patients’ chest CT scan. Methods: This was a retrospective study performed on 63 Iranian adult patients with a final diagnosis of COVID-19. All patients had undergone chest CT scan on admission. Demographic data and imaging profile, including segmental distribution, were evaluated. Moreover, a scoring scale was designed to assess the severity of ground-glass opacification (GGO). The relationship of GGO score with age, sex, and symptoms at presentation was investigated. Results: Among included patients, mean age of patients was 54. 2 § 14. 9 (range: 26-81) years old and 60. 3% were male. Overall, the right lower lobe (87. 3%) and the left lower lobe (85. 7%) were more frequently involved. Specifically, predominant involvement was seen in the posterior segment of the left lower lobe (82. 5%). The most common findings were peripheral GGO and consolidation, which were observed in 92. 1% and 42. 9% of patients, respectively. According to the self-designed GGO scoring scale, about half of the patients presented with mild GGO on admission. GGO score was found to be equally distributed among different sex and age categories; however, the presence of dyspnea on admission was significantly associated with a higher GGO score (p= 0. 022). Cavitation, reticulation, calcification, bronchiectasis, tree-in-bud appearance and nodules were not identified in any of the cases. Conclusion: COVID-19 mainly affects the lower lobes of the lungs. GGO and consolidation in the lung periphery is the imaging hallmark in patients with COVID-19 infection. Absence of bronchiectasis, solitary nodules, cavitation, calcifications, treein-bud appearance, and reversed halo-sign indicates that these features are not common findings, at least in the earlier stages.

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    APA: Copy

    HASELI, SARA, Khalili, Nastaran, BAKHSHAYESH KARAM, MEHRDAD, SANEI TAHERI, MORTEZA, & MOHARRAMZAD, YASHAR. (2020). Lobar Distribution of COVID-19 Pneumonia Based on Chest Computed Tomography Findings; A Retrospective Study. ARCHIVES OF ACADEMIC EMERGENCY MEDICINE (EMERGENCY), 8(1), 0-0. SID. https://sid.ir/paper/339843/en

    Vancouver: Copy

    HASELI SARA, Khalili Nastaran, BAKHSHAYESH KARAM MEHRDAD, SANEI TAHERI MORTEZA, MOHARRAMZAD YASHAR. Lobar Distribution of COVID-19 Pneumonia Based on Chest Computed Tomography Findings; A Retrospective Study. ARCHIVES OF ACADEMIC EMERGENCY MEDICINE (EMERGENCY)[Internet]. 2020;8(1):0-0. Available from: https://sid.ir/paper/339843/en

    IEEE: Copy

    SARA HASELI, Nastaran Khalili, MEHRDAD BAKHSHAYESH KARAM, MORTEZA SANEI TAHERI, and YASHAR MOHARRAMZAD, “Lobar Distribution of COVID-19 Pneumonia Based on Chest Computed Tomography Findings; A Retrospective Study,” ARCHIVES OF ACADEMIC EMERGENCY MEDICINE (EMERGENCY), vol. 8, no. 1, pp. 0–0, 2020, [Online]. Available: https://sid.ir/paper/339843/en

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