Rapidly recurrent metaplastic breast carcinoma after mastectomy: A Case Report

Introduction Metaplastic breast cancer (MBC) is a rare subtype of invasive breast cancer characterized by mixed epithelial and mesenchymal differentiation. It has a poorer prognosis than triple-negative breast cancer, often responds poorly to conventional treatments, and early diagnosis is essential for treatment planning and prognosis. Case Presentation We present a patient who developed recurrent metaplastic breast carcinoma on the left anterior chest wall seven months after left total mastectomy for MBC. The clinical and radiological findings demonstrated rapid local recurrence. Conclusion Literature on MBC remains limited, and patients are underrepresented in clinical studies. This case highlights the aggressive behavior of MBC and the importance of early diagnosis and close follow-up.