What is an anal fistula? Can anal fistula cause cancer? Many patients will have this question, in fact, anal fistula is short for anorectal fistula, occurs in the anorectal periphery of the abscess ulceration or incision and drainage of the aftermath of the lesion. Treatment of the disease needs to be timely, the disease is not timely treatment will lead to aggravation of the condition, may also lead to cancer. The symptoms of anal fistula 1, pus pus how much with the length of the fistula, how much related to the new fistula pus, secretion irritation of the skin and itchy discomfort, when the external mouth obstruction or false healing, pus accumulation in the fistula, local swelling and pain, and even fever, later closed fistula broken, the symptoms began to disappear. 2, pain, fistula smooth without inflammation often do not feel pain, only feel localized swelling and discomfort, walking aggravated. When the fistula infection or pus drainage is not smooth and swelling and inflammation, can cause pain. Internal fistula often feel the lower rectum and anus burning discomfort, pain when defecating. 3, itching Because the pus constantly stimulate the perianal skin, often feel itchy, perianal moisture discomfort, skin discoloration, epidermal detachment, fibrous tissue hyperplasia and thickening, sometimes forming eczema. 4, defecation Complex anal fistula not healed for a long time, can cause the formation of large fibrotic scar around the anorectal or ring-like strips, affecting the anal diastasis and closure, stool feel difficult, there is a feeling of incomplete stool. Causes of cancer 1, bacterial infection Bacteria exist in the fistula for a long time, especially Pseudomonas aeruginosa or tuberculosis infection, lingering, can lead to cancer. 2, long-term chronic inflammation stimulation Long-term inflammation exists, making pus, as well as feces from the fistula discharge, thus stimulating abnormal cell proliferation, resulting in malignant lesions. The early stage of the harm produced by the anal fistula is not big, but once the time is lengthened, it will produce a lot of damage! If you don’t take treatment measures for a long time, it will jeopardize the body, and may even lead to the possibility of cancer, so you should go to the hospital in time to do the examination and accept the scientific treatment after the fistula. Warm reminder: anal and intestinal diseases are mostly influenced by daily diet and hygiene habits, must pay attention to, develop good hygiene habits and healthy diet. Once the symptoms exist, must be regularly screened for anorectal diseases, early prevention, early detection, early treatment.