Which of the following terms describes a channel that communicates between an area of suppuration, such as an abscess, to the surface of the epithelium?

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A sinus tract is a channel that communicates between an area of suppuration (a collection of pus) and the surface of the epithelium. It is often associated with chronic infection or inflammation and can be a complication of conditions such as dental abscesses or hidradenitis suppurativa. Fissures are narrow crevices in tissue, ulcers are open sores on the skin or mucous membranes, and bullae are large fluid-filled blisters.

Which of the Following Terms Describes a Channel That Communicates