Radiotherapy for Keloids

Inclusion Criteria: * Clinically diagnosed keloid * Surgical excision of keloid is either contraindicated or patient has declined treatment with surgical excision (Note: patients with keloids that recurred after previous resection are eligible, as long as the current keloid is either unresectable or patient has declined resection) * Age ≥ 18 * Study specific informed consent provided Exclusion Criteria: * Prior RT to the area of interest that would result in overlap of radiation therapy fields * Females of child bearing age without a negative serum pregnancy test prior to initiation of RT or unwilling to use contraception prior to and during the radiation course * Keloids in areas where radiation therapy introduces unacceptable high risk of toxicity as determined by the treating radiation oncologist * Uncontrolled intercurrent illness (e.g. symptomatic congestive heart failure, uncontrolled cardiac arrhythmia, or psychiatric situation) that would limit compliance with study requirements as judged by the treatment physicians