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Clin J Gastroenterol . A case of ulcerative colitis in a patient undergoing surgery due to exacerbation resulting in toxic megacolon after SARS-CoV-

tetano

Editor, Senior Moderator
Clin J Gastroenterol


. 2025 Apr 28.
doi: 10.1007/s12328-025-02136-9. Online ahead of print. A case of ulcerative colitis in a patient undergoing surgery due to exacerbation resulting in toxic megacolon after SARS-CoV-2 vaccination

Ryota Ogihara[SUP] 1 [/SUP], Minoru Matsuura[SUP] 2 [/SUP], Takuya Ishida[SUP] 1 [/SUP], Hiromu Morikubo[SUP] 1 [/SUP], Tatsuya Mitsui[SUP] 1 [/SUP], Daisuke Saito[SUP] 1 [/SUP], Jun Miyoshi[SUP] 1 [/SUP], Junji Shibahara[SUP] 3 [/SUP], Eiji Sunami[SUP] 4 [/SUP], Tadakazu Hisamatsu[SUP] 1 [/SUP]



Affiliations
Abstract

We herein report a case involving a patient with quiescent ulcerative colitis (UC) in long-term clinical remission whose condition rapidly worsened after receiving a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination, leading to colectomy due to toxic megacolon. The patient received the fifth dose of the Spikevax (mRNA-1273) vaccine and experienced a severe flare-up of UC 6 days later. Pathologic findings of the surgical specimens were consistent with severe active UC concomitant with cytomegalovirus infection. Because mRNA vaccines stimulate both humoral and cellular immunogenicity, it is important to note that they can be a triggering factor for the relapse of UC.

Keywords: Colectomy; SARS-CoV-2 vaccination; Toxic megacolon; Ulcerative colitis.

 
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