“…Via this approach, we found that a significant number of eosinophilic episodes were concurrent with active UC or PSC with no other obvious inciting agent such as a new medication, as 31.3% of EoUC patients had blood eosinophilia during known UC flares, which is similar to previous reports that identified eosinophilia in approximately one-third of UC patients [11,12]. However, we observed that a greater number of eosinophilic episodes occurred immediately after bowel surgery or liver transplantation, suggestive of a possible confounder such as anesthesia or the surgical intervention itself.…”