Predictors of Response to Corticosteroid Therapy in Idiopathic Granulomatous Mastitis: A Retrospective Cohort Study of 176 Patients

Background and Objectives: Idiopathic granulomatous mastitis (IGM) is a rare benign inflammatory breast disease with variable response to corticosteroid therapy. This study aimed to identify predictive factors for steroid responsiveness in IGM patients. Materials and Methods: A retrospective analysis of 176 patients with IGM treated at Cukurova University Faculty of Medicine, Department of General Surgery, between 2011 and 2024 was conducted. Patients were divided into steroid-responsive (Group 1, n = 100) and non-responsive (Group 2, n = 76) groups. Demographic characteristics, clinical features, and treatment history were compared using the chi-square test, Mann–Whitney U test, and multivariate logistic regression analysis.