This prospective cross sectional study was performed on a total of 55 patients with mediastinal and /or hilar lymphadenopathy with or without lung infiltrates referred to Bronchoscopy unit , Chest department, Ain-Shams University hospital for biopsy taking and diagnosis.
All patients were subjected to the following : history taking , clinical examination , radiological assessment by computed tomography (CT )chest , fiberoptic bronchoscopy where biopsies were taken either by conventional-Trans-bronchial needle aspiration (c-TBNA) , endo-bronchial ultrasound (EBUS-TBNA) or direct forceps biopsies and sent for histopathological examination and if the patient had past history of COVID-19 infection with previous positive reverse transcriptase- polymerase chain reaction assay (RT-PCR).
