Fig. 10.

COVID-19 infection in colon cancer. A seventy-year-old female, who was diagnosed with colon cancer more than ten months ago and was treated with surgery presented with new dyspnea and dry cough (without fever) two weeks after her last chemotherapy. Chest CT revealed peripheral consolidation and reverse halo sign involving the right lung (a, b; thick arrows) in favor of COVID-19. Also, small subcentimeter soft tissue density non-calcified pulmonary nodule is seen in left upper lobe (a; thin arrow), concerning for metastasis. Subcentimeter prevascular mediastinal lymph node (c; star) is also noted, which is non-specific and can be neoplastic or reactive in etiology.