The coronavirus disease 2019 (COVID-19), which is caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has been recognized as a worldwide pandemic and mostly affects the respiratory system. A considerable proportion of patients; however, might also experience gastrointestinal (GI) manifestations. Several investigations have assessed GI and hepatic involvement in this disease, although the mechanisms of these involvements in relation to the progression of COVID-19 remain unclear. This review summarized the clinical observations and the main mechanisms behind GI, liver, and pancreatic involvement among COVID-19 patients.
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