What are the reflection items for anal fistula? Experts in Zhengzhou proctology treatment say that patients with anal fistulas generally have a history of acute perianal and rectal abscesses. The abscess either ruptures spontaneously or is surgically incised to drain pus, which flows out from the external opening of the anus skin or inside the anus. These are the main signs for diagnosing anal fistulas. Diagnosis of anal fistulas requires these symptoms and some auxiliary examinations for confirmation. Let's understand them below.
What are the examination items for anal fistulas?
Experts in Zhengzhou proctology treatment say that during palpation of anal fistulas, low-lying fistula tracts can be felt as cord-like hard strips under the skin, extending from the external opening toward the anus. Applying pressure with a finger will cause pus to flow out from the external opening.
Visual examination reveals that the external opening is often on the perianal skin or forms a protrusion or depression on the buttocks. The surrounding skin, irritated by pus, often peels and turns red. Sometimes granulation tissue grows from the external opening. The surrounding skin appears purplish-red, which is often indicative of tuberculous fistulas.
During digital rectal examination for anal fistulas, small hard nodules with slight tenderness can often be felt on the posterior side of the anal canal around the dentate line, indicating the primary internal opening.
These are the examination items for anal fistulas. Experts from Zhengzhou Proctology Hospital say that a systemic examination is also necessary for anal fistulas. Although anal fistulas manifest as localized lesions, they are also related to overall health or certain diseases, so systemic examinations must not be overlooked. Patients with active pulmonary tuberculosis who develop anal fistulas often have tuberculous anal fistulas, and postoperative wound healing is slower.
Experts in Zhengzhou proctology treatment say that anal fistulas in patients with sacroiliac bone tuberculosis may be caused by bone tuberculosis; non-specific ulcerative colitis sometimes develops into an anal abscess, which ruptures and forms an anal fistula. For complex anal fistulas, systemic examinations should be given more attention. If necessary, bacterial cultures and antibiotic sensitivity tests should be performed, and attention should be paid to changes in erythrocyte sedimentation rate (ESR) and blood profiles, or measurements of anal sphincter function should be conducted.