1. Fistula: Causes, Symptoms, Types, and Treatment - Verywell Health
Link: https://www.verywellhealth.com/what-is-a-fistula-1941776
Description: WebOct 4, 2022 · A fistula is an abnormal connection of two body cavities or a body cavity and the skin. For example, fistulas can occur between the rectum and the …
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