摘要
With the improvement of people's living standards, gastrointestinal adverse reactions caused by various adverse factors have attracted more and more people's attention. A recent study has indicated that coronavirus disease 2019(COVID-19) could also invade the gastrointestinal tract, leading to gastrointestinal adverse reactions(Song et al., 2020). In recent years, immunotherapy has provided certain effects for some patients with advanced malignant tumors.
