Breast swelling and stabbing pain are generally not manifestations of cancer, but typical symptoms of breast hyperplasia. During a physical examination, nodular lumps of varying sizes can be felt in the breast, which are tough but not hard, and sometimes tender to touch. Ultrasound examination shows no lumps and no flocculent patterns on the molybdenum target, which can be diagnosed as breast hyperplasia. However, it is important to be cautious as breast hyperplasia and breast cancer can coexist. On one hand, patients with significant hyperplasia should have strengthened follow-up examinations. On the other hand, for patients with significant hyperplastic lumps or unclear boundaries in the thickened areas of the breast, it is recommended to perform a biopsy on the suspicious lesions to prevent misdiagnosis.