COVID-19 in Post-Operative Patients: Imaging Findings.

Coronavirus 2019 (COVID-19) in the post-operative period is challenging. Its clinical manifestations may have similarities to other septic, thoracic, or gastrointestinal post-surgical complications. Additionally, the post-operative period may be a time of increased risk for severe manifestations of COVID-19. We sought to evaluate the frequency of COVID-19 in a cohort of patients who had recently had operations who were undergoing imaging for acute symptoms and the role of chest computed tomography (CT) in this setting. We included all patients who had chest CT for acute symptoms in the 15 days after a surgical procedure between March 1 and 31, 2020. Of 46 patients with acute post-operative symptoms requiring chest imaging, eight (17%) were ultimately diagnosed with COVID-19. Among them, five (62%) required mechanical ventilation and two (25%) died. All had abnormal chest CT with typical findings of COVID-19 in 87%. Computed tomography provided an alternate diagnosis in 53% of patients who did not have COVID-19. The average time between a COVID-19-positive chest CT and the polymerase chain reaction (PCR) confirmation was 1.2 days (range, 0-4 days). COVID-19 is a serious post-operative condition associated with significant morbidity and mortality. Chest CT provides prompt diagnosis of COVID-19. In centers with a high prevalence of COVID-19, chest acquisition should be included in CT scans done for acute post-operative symptoms.