Question: what is a category 5 mammogram?
Answer: A BI-RADS category 4 mammogram has a positive predictive value of about 30%. A category 5 mammogram is almost certainly predictive of breast cancer with a positive predictive value of about 95%. So, a birads score of 4 means I need a biopsy but there is a 30% chance of cancer and a 70% chance of something benign?