Unresolved issues in the use of imaging techniques in COVID-19-associated lesions of the stomach intestine

   Objective. To systematize and analyze data on the use of imaging techniques in COVID-19-associated gastric and intestinal lesions.   Materials and methods. An analysis of publications in PubMed, EMBASE and Web of Science systems was carried out in the period 2020-2023, describing the use of imaging techniques in patients with a confirmed diagnosis of COVID-19-associated gastrointestinal lesions.   Results. The most frequent signs of COVID-19-associated gastric and intestinal lesions on abdominal imaging were identified, their incidence and approximate diagnostic significance were evaluated.   Conclusion. The use of computed tomography and ultrasonography for the diagnosis of COVID-19-associated gastrointestinal lesions is hampered by the lack of clear ideas regarding the sensitivity, specificity, and prognostic value of the previously described radiologic signs of gastrointestinal lesions. In addition, there is no clear algorithm for the use of imaging methods in COVID-19-associated abdominal pain syndrome. The solution of these issues will optimize the use of imaging methods and reduce the time of diagnostic search.