PGR and neoplasm: This table summarizes the clinicopathological characteristics of patients diagnosed with vertebral metastases from breast carcinoma.T, N, M refer to Tumor size, Lymph Node involvement, and Distant Metastasis, respectively, as per the TNM classification system of the American Joint Committee on Cancer (AJCC).SBR: Scarff-Bloom-Richardson grading system; HER2: human epidermal growth factor receptor 2; Luminal A/B: Molecular subtypes based on hormone receptor and HER2 status.Triple negative: Tumors lacking expression of estrogen receptor (ER), progesterone receptor (PR), and HER2.