Introduction: CT related to SARS-CoV-2 pneumonia are subject to continuous changes.The
aim of our study was to study the residual scanographic abnormalities of COVID-19 at 6
months post-infection and to evaluate the sequelae.
Methods: This was a retrospective study including 73 patients who were followed up 6
months after SARS-COV2 pneumonia. A CT was performed at 3 months and 6 months.
Results: The mean age was 56.71 years ± 7.74 with a sex ratio of 2.65 (53 men versus 20
women). Smoking was present in 35% of our patients. Comorbidities were present in 45% of
our patients. On the initial CT, the involvement was bilateral (78.4%) with a predominance
under pleural and basal (38%), ground glass hyperdensities (89.2%), the crazy paving
appearance (62.1 %) and parenchymal consolidations (56.8%) were the most common CT
abnormalities associated with pulmonary embolism in 8.1%. At 6 months post-COVID, 56%
patients reported exertional dyspnea and 21% residual dry cough. Sequelae of SARS-CoV-2
pneumonia were noted in 59.5% of patients at 3 months, of whom only 12% retained
scannographic sequelae at 6 months. The most frequently observed abnormalities were
ground glass hyperdensities (49%) with a change of fibrotic type in 7% of cases made up of:
bronchiectasis (5%), thickening of the septal lines (7%) and fissure distortion (4,6%)
Conclusion: Our study has shown that the majority of post-covid CT sequelae are
spontaneously resolving. However, regular monitoring is necessary to detect post covid-19
fibrosis.