1) Breast cancer is a major global health problem, with most cases occurring in developing countries. Ghanaian studies show that patients often present with advanced-stage disease and experience poor outcomes.
2) Early breast cancer is defined as stage 0, 1, or 2 based on tumor size and lymph node involvement. Treatment involves surgery such as breast-conserving therapy or mastectomy, followed by radiation and/or systemic therapies based on tumor biomarkers.
3) Ductal carcinoma in situ (DCIS) is a non-invasive proliferation of malignant cells within breast ducts. Diagnosis is often from mammography screening, and management involves surgery such as lumpectomy plus radiation therapy based on prognostic factors.