High Resolution Anoscopy

When abnormal cells are found on anal pap smear  a high resolution anoscopy is warranted. HRA is a procedure that allows a closer inspection of the affected tissue in the anal canal. An anesthetic gel is used to numb the area and an anoscope (an instrument used to see into the anus and last part of the rectum) is inserted to allow for visualization of the anal mucosa. A small amount of acetic acid (vinegar) and iodine are used to stain the tissues which will help differentiate the abnormal tissues. Any abnormal appearing tissues are biopsied and samples are sent the pathology lab for further evaluation for any signs of dysplasia (pre-malignant cells) or cancer cells which will require further treatment.

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