Infection(3) SARS-CoV-2(3) Patient(3) patients with COVID-19(3) positive(3) Case report(3) COVID-19(3) Surgical Procedure(2) was performed(2) surgical(2) coronavirus(2) hospital(2) initial(2) Spread(1) measure(1) Japanese(1) Superior mesenteric artery occlusion(1) postoperative course(1) distribution(1) regimen(1) pandemic(1) treated(1) intravenous(1) lack(1) Course(1) Immunosuppression(1) ICU(1) returned(1) worsening(1) Prognosis(1)