What is the role of cystoscopy in the workup of enterovesical fistula?

Updated: Dec 24, 2020
  • Author: Joseph Basler, MD, PhD; Chief Editor: Bradley Fields Schwartz, DO, FACS  more...
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Cystoscopy can be a helpful component of the diagnostic evaluation. Prior to the advancement of radiological diagnostic techniques, cystoscopy was considered to be the most reliable method of diagnosis. [33] The findings of this procedure can suggest the presence of a fistula, and cystoscopy can be used to evaluate for a possible malignancy.

Cystoscopy can be useful in paring down the list of differential diagnoses, and it enables the physician to obtain a biopsy of the fistula to check for malignancy. Localized erythema, papillary/bullous mucosal changes, and, occasionally, material oozing through an area are present in 80%-90% of diagnosed cases (see image below).

An endoscopic view of colovesical fistula (upper r An endoscopic view of colovesical fistula (upper right). Note the prominent edema and erythema characteristic of the fistula (ie, herald patch). Occasionally, a whitish discharge with the consistency of toothpaste can be observed emanating from the orifice. The presentation of a vesicoenteric fistula includes the presence of air, fecal material, and polymicrobial recurrent urinary tract infection.

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