Which of the following is an internal fistula?

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Multiple Choice

Which of the following is an internal fistula?

Explanation:
An internal fistula is a abnormal connection between two hollow organs inside the body, with no opening to the skin. The enterocolonic fistula fits this because it creates a channel between two segments of the gastrointestinal tract—the small intestine and the colon—inside the body, so there is no external drainage to the skin. In contrast, an enterocutaneous fistula has a tract that opens to the skin, producing external drainage. Rectovaginal fistulas and jejunorectal fistulas are also internal connections between internal organs, but the classic example that clearly stays within the GI tract without skin involvement is the enterocolonic fistula.

An internal fistula is a abnormal connection between two hollow organs inside the body, with no opening to the skin. The enterocolonic fistula fits this because it creates a channel between two segments of the gastrointestinal tract—the small intestine and the colon—inside the body, so there is no external drainage to the skin. In contrast, an enterocutaneous fistula has a tract that opens to the skin, producing external drainage. Rectovaginal fistulas and jejunorectal fistulas are also internal connections between internal organs, but the classic example that clearly stays within the GI tract without skin involvement is the enterocolonic fistula.

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