Abdominal CT in COVID-19 patients: incidence, indications, and findings

• DOI: 10.1007/s00261-020-02747-5
• Publication Date: 2020-09-19T14:02:44Z
• Authors: Daniel T. Barkmeier; Erica B. Stein; Katherine Bojicic; Bamidele Otemuyiwa; Dharshan Vummidi; Aamer Chughtai; James H. Ellis
• Keywords: Adult; Male; Adolescent; Gastrointestinal Diseases; Urology; Comorbidity; Young Adult; 03 medical and health sciences; 0302 clinical medicine; Abdomen; Humans; Aged; Retrospective Studies; Aged, 80 and over; Practice; Radiological and Ultrasound Technology; SARS-CoV-2; Incidence; Gastroenterology; COVID-19; Reproducibility of Results; Middle Aged; 3. Good health; Radiology Nuclear Medicine and imaging; Female; Tomography, X-Ray Computed

The purpose of this study was to evaluate the frequency, indications, and findings of abdominal CTs ordered in the initial evaluation of patients who had a positive COVID-19 test performed in our institution.Retrospective chart review was performed on all patients who had a positive test for COVID-19 performed at a single quaternary care center from 1/20/2020 through 5/8/2020. In a subset of patients undergoing abdominal CT as part of the initial evaluation, the demographics, suspected COVID-19 status at the time of scan, presenting complaints, and abdominal CT findings were recorded. Cardiothoracic radiologists reviewed and scored the visualized lung bases for the likelihood of COVID-19.Only 43 (4.1%) of 1057 COVID-19 patients presented with abdominal complaints sufficient to warrant an abdominal CT. Of these 43 patients, the vast majority (39, 91%) were known or suspected to have COVID-19 at the time of the scan. Most (27/43, 63%) scans showed no acute abdominal abnormality, and those that were positive did not share a discernable pattern of abnormalities. Lung base abnormalities were common, and there was moderate inter-reviewer reliability.A minority of COVID-19 patients present with abdominal complaints sufficient to warrant a dedicated CT of the abdomen, and most of these studies will be negative or have abdominal findings not associated with COVID-19. Appropriate lung base findings are a more consistent indication of COVID-19 infection than abdominal findings.