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Digital examination of the anus is a simple clinical procedure that can provide much information to the doctor.

On entry, the examining finger is first gripped by the subcutaneous anal sphincter. A number of structures lie within reach, and those with a firmer consistency can be more easily identified. Examination can be made difficult by painful conditions of the anal wall such as fissures. Collections of pus can give a rather boggy resistance to the examining finger.

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