Fig. 11

CT-pulmonary angiography (CTPA) examination for a 57-years-old COVID-19 male patient complained of severe chest pain and sudden deterioration of oxygen saturation in the second week of infection. [A] Axial CTPA image showed small contrast filling defect inside one of the right basal pulmonary arterial branches … Acute pulmonary embolism. This is together with bilateral basal consolidative and atelectatic patches. [B] Axial CTPA image showed dilatation of the pulmonary trunk exceeding the caliber of the nearby aorta (black arrow) referring to pulmonary hypertension. This is together with a right basal pulmonary vascular enlargement (white arrows). [C] Corresponding axial CT image with MIP reconstruction (lung window) and [D] zoomed image showing branching beaded nodular pattern continuous with the course of the pulmonary arterial tree … Vascular tree-in-bud sign (an indirect sign of pulmonary vasculopathy)