Case Report
Unusual Presentation of a Rectovestibular Fistula as Gastrointestinal Hemorrhage in a Postmenopausal Woman
Table 1
Type, clinical presentation, and frequency of AVM diagnosed in female patients.
| Type | Clinical presentation | Frequency |
| Vestibular fistula | Rectum opens immediately posterior to the vagina outside of the hymen | 41% | Perineal fistula | Rectum opens immediately onto the perineum and is visible externally | 28% | Imperforate anus with no fistula | No identifiable ARM noted; patient may show a “pinpoint anus” | 5% | Rectal atresia and stenosis | Normal anal canal with normal sphincter mechanism | 1% | Cloaca | Rectum, vagina, and urethra are fused as a single orifice | <1% |
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Peña and Hong, 2000 [1].
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