High-Resolution Anoscopy (HRA)

High-Resolution Anoscopy is a procedure that is used to examine and evaluate the anal canal for abnormal cells or lesions that have a high likelihood of turning into cancer.  High-resolution anoscopy is performed with magnification (enlarging the apparent size not the physical size, of something).  High-resolution anoscopy has been shown to reduce the risk of anal cancer.  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 which provides the magnification to view the area.  A doctor uses the colposcope to closely examine suspicious areas in the anal canal.

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To better view the suspicious areas, the physician applies acetic acid (similar to a mild, vinegar-like solution) to a cotton swab which is then applied into the anus through the anoscope.  The acid reacts with certain abnormal cells which makes them appear white.

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If any abnormal cells are detected during the exam, local anesthetic (lidocaine or similar) is used during the procedure to reduce discomfort, a biopsy (a small sample of tissue) of the abnormal tissue is performed by the surgeon.  The cells/tissue removed during the biopsy will then be sent to a laboratory for further examination under a microscope by a pathologist to confirm any cell changes.

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High-resolution anoscopy are performed at a hospital or outpatient facility under sedation (similar to a colonoscopy) and local anesthesia.  High-resolution anoscopy typically takes 20-30 minutes to perform.  If a biopsy is obtained, some light bleeding and discomfort should be expected for one to two days.

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To schedule an appointment, please call our office at (860) 826-3880 or request an appointment online.  If appropriate and availability allows, a consultation appointment will be scheduled for you to be seen by one of our experienced physicians, generally, within a two-week timeframe of contacting the office.  Procedures are generally scheduled shortly thereafter.