High-Resolution Anoscopy (HRA) is a diagnostic procedures that can help evaluate a variety of anal conditions, including anal dysplasia (abnormal growth of cells in the anal canal) and anal cancer. Earlier detection of these conditions can make them easier to treat.
High-resolution anoscopy is anoscopy with magnification. In addition to the anoscope, which helps keep the anus open, a doctor uses another device called a colposcope. A colposcope is a high-resolution mobile microscope connected to a monitor. A doctor uses this colposcope to closely examine suspicious areas in the anal canal through the anoscope.