What causes pus in stool?

What does pus in the stool mean? In fact, you need to pay attention and go to the hospital for a comprehensive examination, because many gastrointestinal diseases can cause this symptom, and it is also common in diseases such as anal fissures, rectal tumors, rectal polyps or colon cancer.

1. Lower gastrointestinal tract diseases

1. Anal canal diseases

It is common in hemorrhoids, anal fissures and anal atrophy.

2. Rectal diseases

1. Inflammatory diseases of the rectum: bacterial dysentery, ulcerative colorectal proctitis, and rectal tuberculosis.

2. Rectal tumors: rectal polyps and rectal papilloma. Rectal cancer, rectal carcinoid, and adjacent malignant tumors invade the rectum.

3. Rectal injury: radiation proctitis, injury and bleeding caused by foreign bodies, instrument examination or biopsy, etc.

3. Colon disease

1. Inflammatory lesions: acute bacillary dysentery, amoebic enteropathy, ulcerative colitis, intestinal tuberculosis, Crohn's disease of the colon, ventricular inflammation and ventricular ulcer.

2. Tumors: colon cancer and colon polyposis.

4. Small Intestinal Diseases

1. Inflammatory lesions: acute hemorrhagic necrotizing enteritis, ventricular inflammation and ventricular ulcer, Rohn's disease, intestinal tuberculosis, and typhoid fever.

2. Tumors: malignant lymphoma, leiomyosarcoma, small intestinal carcinoid, cancer, fibrosarcoma, neurofibrosarcoma. Leiomyoma. Lipoma, adenoma, fibroma, hemangioma.

2. Vascular diseases of the lower gastrointestinal tract

Ischemic bowel disease is common in mesenteric artery embolism or thrombosis, mesenteric vein thrombosis, venous thrombosis, intussusception, intestinal torsion, vascular malformations, etc.

3. Systemic diseases

1. Acute infectious diseases: hemorrhagic fever, leptospirosis, etc.

2. Platelet factors and coagulation mechanism disorders: thrombocytopenic purpura, leukemia, aplastic anemia, hemophilia, etc.

3. Uremia.

4. Connective tissue diseases: systemic lupus erythematosus, dermatomyositis, polyarteritis nodosa.