Don't overlook flank pain in apparently asymptomatic COVID-19 cases: A case report and literature review.

An outbreak of novel coronavirus disease-2019 (COVID-19) was reported in Wuhan, China, in December 2019, which was later declared a global pandemic by the World Health Organization (WHO) in March 2020. It is a life-threatening contagious infection with infected patients usually presenting with respiratory tract symptoms, although the disease can affect other multiple organs. Coronavirus disease-2019 infection is a hypercoagulable state associated with serious thrombotic complications, particularly in critically ill patients. However, these thrombotic complications are also being reported as a presenting symptom in asymptomatic and mildly symptomatic cases of COVID-19 infection in the absence of any other predisposing risk factors. Renal infarction is one of these thrombotic complications and can present with ambiguous abdominal symptoms leading to irreversible organ damage and other thromboembolic complications, if not diagnosed in time. Physicians must be aware of such uncommon presenting complaints of COVID-19 infection and include it in the differential diagnosis of patients presenting with abdominal symptoms.