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MRI review of female pelvic fistulizing disease

A wide variety of fistulae occur in the female pelvis, most of which cause significant morbidity. Diagnosis, characterization, and treatment planning may be difficult using traditional imaging modalities such as fluoroscopy and computed tomography. To date, there is no comprehensive literature review of the radiologic findings associated with various types of female pelvic fistulae, and furthermore, none dedicated to magnetic resonance imaging (MRI). In this article, we seek to provide a broad overview of the MRI characteristics of female pelvic fistulizing disease in combination with epidemiologic and clinical characteristics. MRI is often considered the imaging modality of choice for evaluation of fistulae owing to its superior soft‐tissue contrast and ability to provide surgeons with the highest quality information derived from just one study, including anatomic location of fistulae and associated pelvic pathology. In other instances, MRI can be complementary to the more traditional imaging techniques. This review will describe the etiology, anatomy, MRI findings, and treatment pearls for several of the more common pelvic fistulae found in female patients, including anovaginal, rectovaginal, colovaginal, vesicovaginal, colovesical, and other complex fistulae.