The lesion is mainly located in the transverse colon, but some scholars believe that in contrast to colitis caused by C. difficile, colitis caused by K. pneumoniae is usually segmental and mainly located in the right colon (β-lactamase inhibitors have low concentrations in the right colon, and oxytocin can overgrow, leading to colitis).[10,11] Pathological examination revealed that only red blood cells infiltrated the colon mucosa, and red blood cells infiltrated the intestinal cavity. This evidence concerns the gene OXT and colitis.