• Anna Dworzańska, Magdalena Tudrujek-Zdunek, Jerzy Mosiewicz, Lech Panasiuk, and Krzysztof Tomasiewicz.
• Chair and Department of Infectious Diseases, Medical University, Lublin, Poland.
• Ann Agric Environ Med. 2020 Jun 19; 27 (2): 317-318.

IntroductionDiagnostic procedure in Coronavirus Disease 2019 (COVID-19) is based mainly on performing real-time-reverse transcription-polymerase chain-reaction (RT-PCR), which has been accepted as the gold standard method. In some cases, such as mutations of the SARS-CoV-2 genome, variable viral load kinetics or laboratory errors, it can be false-negative.Case ReportThe case is presented of a 56-year-old man with respiratory tract symptoms, with twice negative results of real-time-reverse transcription-polymerase chain-reaction of nasopharyngeal swabs and positive chest computed tomography, with typical findings for COVID-19 pneumonia.ConclusionsPatients with negative RT-PCR results, but with positive computed tomography findings characteristic for COVID-19, should be treated as well as those infected.

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