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The mechanisms of acute respiratory failure other than inflammation and complicating the SARS-CoV-2 infection are still far from being fully understood, thus challenging the management of COVID-19 patients in the critical care setting. In this unforeseen scenario, the role of an individual’s excessive spontaneous breathing may acquire critical importance, being one potential and important driver of lung injury and disease progression. The consequences of this acute lung damage may impair lung structure, forecasting the model of a fragile respiratory system. This perspective article aims to analyze the progression of injured lung phenotypes across the SARS-CoV-2 induced respiratory failure, pointing out the role of spontaneous breathing and also tackling the specific respiratory/ventilatory strategy required by the fragile lung type.

Bronchopulmonary Actinomycosis Associated With Hiatal Hernia

Despite the benign behaviour of bronchial fibroepithelial polyps, it is important to fix some robust diagnostic criteria in order to avoid misdiagnoses leading to unnecessary aggressive treatment. Differential diagnosis mainly includes inflammatory polyps, hamartomas and papillomas.