Question

1. which of the following describes a fistula?

passage of bright red, bloody stools
mass of enlarged, varicose veins
abnormal tunnel connecting two bodies
formation of bulging pouches

Explanation:

A fistula is an abnormal connection or tunnel between two body - parts or between a body - part and the skin. The first option describes rectal bleeding, the second describes hemorrhoids, and the fourth describes diverticula.

Answer:

Abnormal tunnel connecting two bodies