Search results
Results from the WOW.Com Content Network
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.
Defecography (also known as proctography, defecating/defecation proctography, evacuating/evacuation proctography or dynamic rectal examination) is a type of medical radiological imaging in which the mechanics of a patient's defecation are visualized in real time using a fluoroscope. [1]
This page was last edited on 2 January 2006, at 02:22 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
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.
A contrast agent usually shortens, but in some instances increases, the value of T1 of nearby water protons thereby altering the contrast in the image. Most clinically used MRI contrast agents work by shortening the T1 relaxation time of protons inside tissues via interactions with the nearby contrast agent.