Generally can feel the lump should be considered low anal fistula, but also need to be combined with ultrasound, iodine oil fistula imaging and other examination results to determine the location of the fistula.
According to the location of anal fistula can be divided into low anal fistula and high anal fistula. In general, take anal fingerprinting examination can be through the anal margin in the dentate line near, that is, the external anal sphincter deep below the position of the mass, most likely to consider may be low anal fistula. If it is a high level fistula, through the anal fingerprinting usually can not feel the mass.
In addition, in order to clarify the diagnosis, the patient may also need to cooperate with the doctor to do further imaging, the doctor will be combined with ultrasound, iodine oil fistulography and other examination results, more clearly define the location of the fistula as well as the number of fistulas.
Usually, fistula patients will have perianal itching, pain, discharge and other symptoms, which may be related to perianal or perirectal abscess, ulcerative colitis and other causes.
When patients are examined for the presence of low anal fistula, it is recommended that they actively cooperate with their doctors for surgical treatment, and at the same time improve their poor lifestyle and dietary habits.