Patient Age, y/Race/Sex Hurley Stage Years Since Diagnosis Previous Treatment Sites 1 43/black/F III 24 Topical and oral antibiotics Infragluteal fold, bilateral axilla, left groin 2 50/black/M III 7 Topical and oral antibiotics; surgery Buttocks, left axilla, perineum 3 51/white/M III 20 Topical and oral antibiotics; multiple surgeries; infliximab Infragluteal fold, bilateral anterior perineum, right axilla 4 40/black/M II 6 Topical and oral antibiotics; tretinoin; surgery Right groin 5 40/black/F II 5 Topical and oral antibiotics; laser treatment Perineum Abbreviations: F: Female; M: Male; Y: Years

Table 1: Characteristics of 5 patients with chronic refractory hidradenitis suppurativa treated with radiation therapy.