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Pattern and Age Distribution of COVID-19 on Pulmonary Computed Tomography

[ Vol. 17 , Issue. 6 ]


Omar Muayad Sultan*, Dhia Mahdey Alghazali, Haider Al-Tameemi, Mohammed Abed*, Dhaffer Abdullah Hawiji, Muthana Naser Abu Ghniem, Laith Al-Obaidi and Raad Hefdhi Abedtwfeq   Pages 775 - 780 ( 6 )


Background: COVID-19 has emerged recently and has become a global concern. Computed tomography (CT) plays a vital role in the diagnosis.

Objectives: To characterize the pulmonary CT findings and distributions of COVID-19 infection in regard to different age groups.

Methods: Chest CT scan of 104 symptomatic patients with COVID-19 infection from 7 Iraqi isolation centers were retrospectively analyzed between March 10th to April 5th, 2020. Patients were sub-classified according to their ages into three groups (young adult:20-39 years, middle age:40-59 years, and old age:60-90 years).

Results: The most common findings were ground-glass opacities (GGO) (92.3%, followed by consolidation (27.9%), bronchovascular thickening (15.4%), and crazy-paving (12.5%). Less commonly, there were tree-in-bud (6.7%), pulmonary nodules (5.8%), bronchiectasis (3.8%), pleural effusion (1.9%), and cavitation (1%). There were no hallo signs, reversed hallo signs, and mediastinal lymphadenopathy. Pulmonary changes were unilateral in 16.7% and bilateral in 83.3%, central in 14.6%, peripheral in 57.3%, and diffuse (central and peripheral) in 28.1%. Most cases showed multi- lobar changes (70.8%), while the lower lobe was more commonly involved (17.7%) than the middle lobe/lingula (8.3%) and upper lobe (3.1%). In unilateral involvement, changes were more on the right (68.8%) than the left (31.2%) side. Compared with middle and old age groups, young adult patients showed significantly lesser frequency of consolidation (17% vs. 13.3% and 37%), diffuse changes 28.1% (14.2% vs. 35.3% and 40.5%), bilateral disease (71.4% vs. 94.1% and 85.2%), and multi-lobar involvement (51.4% vs. 82.4% and 81.4%) respectively.

Conclusion: Bilateral and peripheral GGO were the most frequent findings with the right and lower lobar predilection. The pattern and the distribution of CT changes seem to be age-specific.


COVID-19, coronavirus, multi-detector computed tomography, the Middle East respiratory syndrome coronavirus, radiology, diagnostic imaging.


College of Medicine, Lecturer of radiodiagnosis, Director of Medical Education Unit (MEU), Tikrit University, Tikrit, Department of Degnostic Imaging, Al-Imam Al-Hussein Medical City. Karbala 56001, Faculty of Medicine, University of Kufa, Najaf 54001, Department of Radiology, Al-Yarmuk Teaching Hospital, Baghdad 10001, AL-Hussain Teaching Hospital, Al-Muthana 76218, Al-Hakeem General Hospital, Al-Najaf 54001, Poole Hospital, Poole, Department of Radiology, Al-Yarmuk Teaching Hospital, Baghdad 10001

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