About 60% of lobular breast tumors are benign, with about 20% each being junctional and malignant. Lobulated breast tumors are rare, accounting for less than 1% of breast tumors, and originate from fibrous epithelium. They can be categorized into benign, junctional, and malignant types based on pathologic features. Benign tumors account for about 60% of cases, with mildly increased mesenchymal components and only mild to moderate cellular atypia, expansive growth, and rare nuclear schizophrenia. The malignant type accounts for about 20% of cases, with significant mesenchymal hyperproliferation and cellular atypia, infiltrative growth, and frequent nuclear schizophrenia. Junctional tumors also account for about 20% of cases, with pathologic and clinical manifestations intermediate between benign and malignant. Breast lobular tumors are mostly benign, but also need to be differentiated from fibroids, and it is recommended that patients suspected of having lobular tumors follow the doctor’s instructions for further examination and treatment.