Researchers from the University of Alberta in Canada recently published a comprehensive meta-analysis in Abdominal Radiology (September 14, 2020), linking COVID-19 infections to gastrointestinal symptoms—even in the absence of respiratory issues.
COVID-19 symptoms vary widely, including fever, cough, fatigue, shortness of breath, skin rashes, loss of smell or taste, and even 'COVID toes.' Many cases are asymptomatic or mild. This University of Alberta study highlights gastrointestinal disorders as a key presentation.
"There is a growing body of literature showing that abdominal symptomatology is a common presentation of COVID-19," notes lead author Mitch Wilson.
The analysis reveals that symptoms like nausea, diarrhea, vomiting, and abdominal pain are frequent. Notably, 16% of cases involve only these gastrointestinal issues. Drawing from 36 studies (March 31 to July 15, 2020), the researchers emphasize the need for heightened scrutiny during abdominal imaging to aid diagnosis.
Patients underwent abdominal CT scans, Doppler ultrasound, or standard ultrasound. Anomalies appeared in 22 of the 36 studies, most commonly intestinal wall thickening. Other findings included pneumatosis intestinalis across intestinal segments, abnormal gas in the portal vein, and intussusception in young children—a rare condition where one intestinal segment telescopes into another, causing obstruction.
This research from the University of Alberta underscores atypical COVID-19 manifestations and aims to enhance diagnostic accuracy, particularly without respiratory symptoms. Note that it does not cover all possible gastrointestinal complications from available studies.
