Correction: CT-Angiographic Aspects of Pulmonary Embolism on SARS COV-2.

[This corrects the article DOI: 10.5334/jbsr.3021.].

Aspects scanographiques de la pneumopathie à COVID-19 à Ouagadougou: Étude multicentrique à propos de 1017 cas.

OBJECTIVE: To study the chest CT profile of SARS-CoV-2 pneumonia in patients in the city of Ouagadougou. PATIENTS AND METHODS: descriptive cross-sectional study with retrospective collection of 1017 patients of both sexes. Included were patients aged 15 and over who had performed a chest CT scan without or with injection of contrast product, suspected or positive for COVID -19. The variables analyzed were: the history, the nature of the examination, the socio-demographic, clinical, CT data including the description of the tomodensitometric lesions and their characteristics, the extent of the parenchymal lesions according to the visual estimate of the French thoracic Imaging Society, complications, other lesions on the chest CT scan and CORADS classification. All parameters (age, sex on the one hand and clinical and CT findings on the other) were subjected to statistical analysis. RESULTS: The mean age of the patients was 56.95 years, predominantly male (1.47). Dyspnea was the most frequent symptomatology, at 46.26% (n = 506). Diabetes was the most common comorbidity with 29.37% (n = 94). Frosted glass opacity accounted for 90.95% of elementary lesions which were predominantly in plaque in 44.35% (n = 451), bilateral in (82.79%) and peripheral subpleural in (81.51%). The lower lobes were the most affected and postero-basal involvement predominant with greater involvement in the right lung. The extent was severe in 28.42% (n = 289). Thirty-nine point twenty-three (39.23)% or 399 of cases presented with complications dominated by pleural effusion at 56.39% (n = 225) and pulmonary embolism at 34.08% (n = 136 ). The lesions were classified as CORADS type in 815 CT reports. CORADS 5 type lesions were found in 47% of patients. Five hundred and ninety-two (592) PCRs of our patients were undetermined, in 58.21%. The PCR was positive in 342 cases or 33.63%. The bi- and multivariate analysis noted: a statistically significant link between the age and the extent of the lesions, between the extent of the lesions and the clinical context, between the extent of the lesions and comorbidities such as diabetes, Hypertension and renal failure. There was also a link between the PCR result and basic lesions such as ground glass and crazy paving and between the occurrence of pulmonary embolism and the presence of hypertension. DISCUSSION: The scanographic profile corresponded to that described in the literature. Frosted glass was the most common elementary lesion. The impairment was severe to critical in patients over 65 with comorbidity. CT angiography was the most requested in front of signs such as dyspnea and desaturation CONCLUSION: A study on CT specificities with precision on the onset of symptoms and the notion of vaccination would complement these results.

CT-Angiographic Aspects of Pulmonary Embolism on SARS COV-2.

Objectives: To study pulmonary embolism during COVID-19 pneumonia. Patients and Methods: This was a one-year retrospective and descriptive study of all patients from three imaging sites with SARS-CoV2 infection. Results: Two hundred and thirty-nine patients were included. The prevalence of pulmonary embolism was 18.4%. The average age was 55 years old. The sex ratio was 1.65. Dyspnea (58.6%), cough (56.1%), and chest pain (40.2%) were the most common reasons for consultation. In 151 patients (63.2%), chest computed tomography (CT) angiography was performed without checking level of D-dimer. The level of D-dimers was elevated in 47.8%. Grade 5 of CO-RADS accounted for 62.3%. In 70.5% of cases, the pulmonary embolism was bilateral with subsegmental involvement in 47.7%.Condensation in 'ground glass' with 'crazy paving' were the predominant typical parenchymal lesions with a frequency of 93.7% and 59.4%. In univariate analysis, D-dimers were significantly associated with the occurrence of pulmonary embolism (p < 0.001). Male sex was associated with a non-significantly higher Risk of having a pulmonary embolism (1.18 95% CI: 0.61-2.31, p = 0.622). The critical level increased the risk of pulmonary embolism in a non-significant way. Only the high level of D-dimers was and this, in a significant way. Conclusion: Pulmonary embolism was increased in the context of SARS-CoV2. The chest CT-angiography associated with the dosage of D-dimers constitutes a good diagnostic arsenal.