Symptoms of hemorrhoids and anal fistula

Written by Chen Tian Jing
Colorectal Surgery
Updated on November 16, 2024
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If there are concurrent hemorrhoids and anal fistulas, then the clinical manifestations primarily involve the combined symptoms of both conditions. The clinical manifestations of hemorrhoids mainly include recurrent prolapse of local swellings at the anus along with defecation bleeding or pain. As for anal fistulas, they primarily present with local infectious symptoms at the anus because anal fistulas have distinct external and internal openings. During acute episodes, there typically is intermittent discharge of pus from the external opening along with accompanying stabbing pain. If the patient also has hemorrhoids or an exposed anal fissure, it is recommended to proceed with surgical treatment as soon as possible. The only treatment method for anal fistulas is surgery. During the surgery, while excising the wall of the anal fistula tract, mixed hemorrhoids can also be removed simultaneously, achieving the purpose of complete cure.

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Written by Chen Tian Jing
Colorectal Surgery
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What are the consequences of not treating an anal fistula?

If an anal fistula is not promptly treated with surgery, it may lead to an increase in the number of local branches or a thickening of the fistula wall. If the branches of the anal fistula extend to the ischiorectal fossa, it may also lead to pelvic infections. Moreover, if the anal fistula persists for a long time or if there is significant local inflammatory stimulation, it may even lead to cancerous changes in the fistula. Therefore, once an anal fistula is discovered and diagnosed, it is recommended to promptly undergo surgical treatment with fistulotomy and seton placement. Post-surgery, it is crucial to ensure thorough disinfection of the local wound, debridement, and dressing changes, which are very important for the recovery of the wound. This helps prevent pseudohealing, ensuring that the anal fistula heals completely and preventing recurrent episodes.

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Written by Chen Tian Jing
Colorectal Surgery
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What causes anal fistulas?

The most common cause of anal fistula is perianal abscess. Both anal fistula and perianal abscess involve infections at the anal crypts. Typically, an anal fistula forms naturally after a perianal abscess ruptures. Once an anal fistula occurs, it requires prompt surgical treatment. The primary surgical technique is fistulotomy with seton placement, thoroughly removing the local lesion and infection focus to allow fresh granulation tissue to regrow. Anal fistula is a local infectious disease of the anus, generally categorized into simple superficial anal fistula and high-risk complex anal fistula. If a high-position complex anal fistula is suspected, further diagnosis may require additional examination with pelvic MRI or perianal ultrasonography. After the rupture of a perianal abscess, it typically forms a characteristic internal and external opening, with a fistula tract connecting them, thereby forming the typical anal fistula.

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Written by Chen Tian Jing
Colorectal Surgery
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The difference between perianal abscess and anal fistula

Perianal abscesses and anal fistulas both belong to local infectious diseases of the anus. A perianal abscess represents the acute phase of infection, characterized by significant localized subcutaneous swelling, heat, pain, and the formation of pus and abscesses. Once the pus breaks through the skin and discharges, it naturally forms an anal fistula. Anal fistulas represent the later stages or dormant phases of local infections. Both perianal abscesses and anal fistulas require surgical treatment. The surgical method for perianal abscesses mainly involves a one-time radical surgery for the abscess, while the surgical approach for anal fistulas primarily involves fistulotomy with seton placement, followed by regular wound cleaning and dressing changes post-surgery.

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Written by Deng Heng
Colorectal Surgery
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Does an anal fistula require surgery?

The treatment of anal fistula mainly focuses on surgical treatment, with medication as a secondary support. This means that without surgery, an anal fistula essentially cannot heal. Non-conservative treatments for anal fistulas are only temporary symptomatic treatments that manage the condition and alleviate clinical symptoms. For example, during an acute attack of an anal fistula, anti-inflammatory drugs can be used to temporarily relieve symptoms such as pain. Therefore, surgery is necessary for anal fistulas, as surgical treatment can completely eradicate the source of the disease, addressing the internal and external origins of the fistula for a complete cure.

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Written by Chen Tian Jing
Colorectal Surgery
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Will anal fistula cause bleeding during bowel movements?

If an anal fistula occurs, during the acute phase of the anal fistula, or when the internal and external openings of the anal fistula are ulcerated, there may also be bleeding during defecation. However, the bleeding from defecation due to an anal fistula is generally minor, and occasionally pus may also be discharged from the anus, or pus may be discharged from the external opening, causing itching or stinging of the skin around the external opening. If local pain or bleeding from defecation occurs with an anal fistula, prompt local anti-inflammatory treatment is needed; an anti-inflammatory ointment can be chosen for local application. However, the fundamental treatment for an anal fistula still requires surgery. It is generally recommended to directly perform a fistulotomy with seton placement to completely heal the fistula and prevent recurrent episodes.