Lung involvement in macrophage activation syndrome and severe COVID-19: results from a cross-sectional study to assess clinical, laboratory and artificial intelligence–radiological differences. Issue 9 (21st July 2020)

• Record Type: Journal Article
• Authors: Ruscitti, Piero; Bruno, Federico; Berardicurti, Onorina; Acanfora, Chiara; Pavlych, Viktoriya; Palumbo, Pierpaolo; Conforti, Alessandro; Carubbi, Francesco; Di Cola, Ilenia; Di Benedetto, Paola; Cipriani, Paola; Grassi, Davide; Masciocchi, Carlo; Iagnocco, Annamaria; Barile, Antonio; Giacomelli, Roberto
• Is Part Of: Annals of the rheumatic diseases. Volume 79:Issue 9(2020)
• Page Start: 1152
• Page End: 1155
• Publication Date: 2020-07-21
• Subjects: inflammation -- still's disease, adult-onset -- arthritis, juvenile; Rheumatism -- Periodicals; 616.723005
• DOI: 10.1136/annrheumdis-2020-218048
• Languages: English
• ISSNs: 0003-4967

Abstract

Abstract : Objectives: To evaluate the clinical pictures, laboratory tests and imaging of patients with lung involvement, either from severe COVID-19 or macrophage activation syndrome (MAS), in order to assess how similar these two diseases are. Methods: The present work has been designed as a cross-sectional single-centre study to compare characteristics of patients with lung involvement either from MAS or severe COVID-19. Chest CT scans were assessed by using an artificial intelligence (AI)-based software. Results: Ten patients with MAS and 47 patients with severe COVID-19 with lung involvement were assessed. Although all patients showed fever and dyspnoea, patients with MAS were characterised by thrombocytopaenia, whereas patients with severe COVID-19 were characterised by lymphopaenia and neutrophilia. Higher values of H-score characterised patients with MAS when compared with severe COVID-19. AI-reconstructed images of chest CT scan showed that apical, basal, peripheral and bilateral distributions of ground-glass opacities (GGOs), as well as apical consolidations, were more represented in severe COVID-19 than in MAS. C reactive protein directly correlated with GGOs extension in both diseases. Furthermore, lymphopaenia inversely correlated with GGOs extension in severe COVID-19. Conclusions: Our data could suggest laboratory and radiological differences between MAS and severe COVID-19, paving the way for further hypotheses to be investigated in future confirmatory studies.