Is it cancer to have pus blood in stool?

Blood purulent stool is not necessarily cancer. Blood purulent stool occurs more common diseases: one, infectious factors. The most common is dysentery, and other bacterial or parasitic infections, can also cause blood purulent stool. Two, non-infectious factors. The most common is ulcerative colitis, in addition to colon polyps, rectal polyps can also show blood purulent stool. Constipated colitis: Performance for constipation, diarrhea or constipation and diarrhea alternate generation, defecation difficulties caused by mucus purulent blood stool. Perianal tumor in addition to hematochezia, purulent blood stool, can be accompanied by inguinal lymph node enlargement, liver metastasis, anal itching. Therefore, the performance of purulent blood stool in addition to alert tumor, but also should consider some of the above diseases.