anal canal

Normal anal canal

What is the anal canal? The anal canal is the last part of the gastrointestinal tract. It connects the rectum to the anus. The anus is the external opening where fecal matter is released from the body. What is the anatomy of the normal anal canal? The anal canal is made up of 3 layers …
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High grade squamous intraepithelial lesion (HSIL) of the anal canal

What is a high grade squamous intraepithelial lesion of the anal canal?  High grade squamous intraepithelial lesion (HSIL) is a pre-cancerous disease that starts from specialized squamous cells that cover the inside of the anal canal. HSIL is called a pre-cancerous disease because over time it can turn into a type of cancer called squamous cell …
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