I have a keloid on my chest which has formed over the last 20 years and is now really thick and aggressive, my skin is fair/olive. Is using intralesional injections fluorouracil 50mg solution with trimcinalone acetonide 40mg for keloids with estimated ratios, effective for treatment of flattening and reducing pain and improve overall physical appearance (reducing itchiness, pain and discomfort and looking more flat like skin)? I’ve heard that 40mg trimcinalone acetonide is more effective?