Chest Wall Reconstruction and Chemotherapy for Infectious Costochondritis Associated with Recurrent Breast Cancer

INTRODUCTION: Management of chest wall recurrence after mastectomy remains debated. While surgery is invasive, both Japanese and international guidelines allow resection in selected patients and complete excision can provide durable control. With advances in systemic therapy, the value of aggressive local treatment for isolated recurrence requires reevaluation. Tumor biology and changes in receptor status after prior therapy also affect prognosis. However, infectious ribs or cartilage ulcers following chemotherapy and chest wall reconstruction are rarely reported. We describe a case of chest wall recurrence treated with multimodal therapy, including resection and reconstruction, complicated by infectious costochondritis.