Chest CT Findings of Coronavirus Disease 2019 (COVID-19)

Area of Science:

• Radiology
• Infectious Diseases
• Pulmonology

Background:

• Coronavirus disease 2019 (COVID-19) emerged in late 2019, rapidly becoming a global pandemic.
• Early and accurate diagnosis is crucial for managing COVID-19 patients and controlling transmission.
• Chest computed tomography (CT) is a valuable imaging modality for evaluating pneumonia.

Purpose of the Study:

• To investigate and characterize the chest CT findings in patients with COVID-19 pneumonia.
• To identify common and distinguishing radiological features associated with COVID-19.
• To assess the utility of CT scans in the early diagnosis of COVID-19.

Main Methods:

• Retrospective analysis of chest CT scans from six RT-PCR confirmed COVID-19 cases.
• Evaluation of CT features including ground glass opacity, consolidation, air bronchogram, crazy paving, and reversed halo sign.
• Assessment of lesion distribution (peripheral vs. central involvement).

Main Results:

• One patient had a normal CT scan; another showed only ground glass opacity.
• Four patients presented with predominant ground glass opacity and consolidation.
• Common findings included ground glass opacity (6/6), consolidation (4/6), air bronchogram (5/6), and crazy paving (3/6).
• Lesion locations varied, with peripheral predominance in three patients and mixed peripheral/central involvement in two.
• Enlarged mediastinal nodes were observed in one patient; no pleural effusion was noted.

Conclusions:

• Chest CT demonstrates characteristic findings in COVID-19 pneumonia, including ground glass opacity and consolidation.
• CT imaging can serve as a primary tool for the early diagnosis of COVID-19 pneumonia.
• The observed CT features aid in differentiating COVID-19 from other pneumonias and support timely clinical management.