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Anal fistula is a chronic abnormal communication between the anal canal and the perianal skin. [1] An anal fistula can be described as a narrow tunnel with its internal opening in the anal canal and its external opening in the skin near the anus. [2] Anal fistulae commonly occur in people with a history of anal abscesses. They can form when ...
Anorectal Abscess and Fistula: Painful swelling, [5] Redness, Pain, [10] Bloody diarrhea, [11] an opening can point to a fistula, with or without drainage [5] with itchiness. [12] Visual Exam, Digital Rectal Exam, Anoscopy, Imaging (CT, MRI) of the fistula tract, endoanal ultrasound, Labs, [11] exam under anesthesia. [11]
Goodsall's rule relates the external opening (in the perianal skin) of an anal fistula to its internal opening (in the anal canal). It states that if the perianal skin opening is posterior to the transverse anal line, the fistulous tract will open into the anal canal in the midline posteriorly, sometimes taking a curvilinear course.
Anorectal abscess (also known as an anal/rectal abscess or perianal/perirectal abscess) is an abscess adjacent to the anus. [1] Most cases of perianal abscesses are sporadic, though there are certain situations which elevate the risk for developing the disease, such as diabetes mellitus , Crohn's disease , chronic corticosteroid treatment and ...
There are several forms of imperforate anus and anorectal malformations. The new classification is in relation of the type of associated fistula. [7] The Wingspread classification was in low and high anomalies: [citation needed] A low lesion, in which the colon remains close to the skin.
Dynamic pelvic MRI, also called MRI defecography is an alternative that is better for some problems but not as good for other problems. [38] Proctosigmoidoscopy involves the insertion of an endoscope (a long, thin, flexible tube with a camera) into the anal canal, rectum and sigmoid colon. The procedure allows for visualization of the interior ...
A rectal prolapse occurs when walls of the rectum have prolapsed to such a degree that they protrude out of the anus and are visible outside the body. [2] However, most researchers agree that there are 3 to 5 different types of rectal prolapse, depending on whether the prolapsed section is visible externally, and whether the full or only partial thickness of the rectal wall is involved.
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