The findings of the present study lend further support to the concept that the entire anal canal should be preserved.

The anal canal at the posterior end is a deep slot.

Lesions can also occur within the anal canal, where they are more likely to create symptoms.

The anal canal is the terminal part of the large intestine.

The perianal space surrounds the anal canal below the white line.

The bands may be too close to the area in the anal canal that contains pain sensors.

There are three main cushions present in the normal anal canal.

You pass a large stool that stretches the anal canal.

Hilton's white line is a boundary in the anal canal.