Which COVID-19 patients should be recommended for home isolation and which should be hospitalized? Predictors of disease progression for mild COVID-19 patients

Each country has different treatment and home isolation recommendations regarding the management of mild COVID-19 patients, and there is not yet a standard approach. The aim of this study is to determine which patients are suitable for home isolation by identifying the variables that predict the progression of the disease in mild COVID-19 patients. This prospective observational study included laboratory confirmed mild COVID-19 patients older than 18 years. The primary outcome of the study was the disease progression in mild COVID-19 patients. A multivariate regression model was created according to the results of univariate analyses. A total of 254 patients included in the study. Median age of the patients was 34.5 years (27–42), and 132 (52%) of them were male. COVID-19 compatible thoracic computed tomography appearance (P<0.001, HR=6.58, 95% CI=2.60-16.65) and advanced age (P=0.008, HR=1.07, 95% CI=1.02-1.13) were significantly associated with the progression of the disease, and the use of hydroxychloroquine (P=0.002, HR=0.09, 95% CI=0.02-0.32) was significantly associated with a decrease in the disease progression. The advanced age and COVID-19 compatible thoracic computed tomography appearance were associated with progression of the disease, while hydroxychloroquine treatment was associated with decreased progression in mild COVID-19 patients.

Cyst-related primary lung malignancies: an important and relatively unknown imaging appearance of (early) lung cancer

It is well known that lung cancer can manifest itself in imaging as solid and subsolid nodules or masses. However, in this era of increased computed tomography use another morphological computed tomography appearance of lung cancer is increasingly being recognised, presenting as a malignancy in relation to cystic airspaces. Despite the fact that it seems to be a relatively common finding in daily practice, literature on this entity is scarce and presumably the overall awareness is limited. This can lead to misinterpretation and delay in diagnosis and, therefore, increased awareness is urgently needed. This review aims to illustrate the imaging appearances of cyst-related primary lung malignancies, demonstrate its mimickers and potential pitfalls, and discuss the clinical implications based on the available literature and our own experience in four different hospitals.