Clinical Assessment and Imaging Modalities of Fistula in Ano

Cologne, Kyle G.; Villanueva-Herrero, Juan Antonio; Montaño-Torres, Enrique; Ortega, Adrián E.

doi:10.1007/978-1-4614-9014-2_6

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2014

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“…The majority of anal fistulas are of non-specific origin and result from inflammation of anal glands, and are usually termed as idiopathic or cryptoglandular [ 1 ]. The cryptoglandular hypothesis states that the infection arises in the anal glands at the dentate line when the draining duct becomes blocked by infected debris, as an intersphincteric infection, and from there may progress by different routes [ 8 ]. This abscess may resolve by means of spontaneous drainage into the anal canal or may progress to an acute anorectal abscess.…”

Section: Etiologymentioning

confidence: 99%

Our Experience with MR Imaging of Perianal Fistulas

et al. 2014

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SummaryMagnetic resonance imaging (MRI) depicts infectious foci in the perianal region better than any other imaging modality. MRI allows definition of the fistula, associated abscess formation and its secondary extensions. Accurate information is necessary for surgical treatment and to obtain a decrease in the incidence of recurrence and complications. Radiologists should be familiar with anatomical and pathological findings of perianal fistulas and classify them using the MRI – based grading system. The purpose of this article was to provide an overview for evaluation of perianal fistulas, examples of various fistula types and their classification.

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Section: Etiologymentioning

confidence: 99%