A life-threatening haemoptysis case that would have been defined as idiopathic before the COVID-19 era.

The coronavirus disease 2019 (COVID-19) is characterized by respiratory infection which can show very different clinical pictures, somewhat changing medical paradigm. Hemoptysis defined as idiopathic can be seen as much as 15%. Currently, increasing hemoptysis cases are being reported in medical coronavirus literature. We here present a hemoptysis case that would be defined as idiopathic before the COVID-19 era. After the first clinical picture, the case turned into a life-threatening hemoptysis. We studied the case comprehensively as clinical, pathogenetical, therapeutic and clinical practical aspects. Thus, we hypothesized that especially in the pandemic era, all hemoptysis cases must be evaluated as a possible life threatening infectious disease with unpredictable prognosis.