A 70-year-old female patient diagnosed with HCoV-OC43 pneumonia and chronic lymphocytic leukemia (CLL). According to the RSNA guidelines, CORADS score is given as 5. GGO (crazy paving) (black arrow) accompanied by interlobular and intralobular septal thickening on the axial CT section and patchy consolidation areas, faint GGO areas (black arrowhead), and pleural effusion (asterisks).