Bilateral breast pain generally is not considered breast cancer, but rather breast hyperplasia. Diagnosis can be confirmed through breast ultrasound and mammography. The ultrasound of breast hyperplasia typically shows uneven low echo areas; if cysts are present, they appear as anechoic areas. Mammography may display a ground-glass or cotton wool-like shadow. However, it is important to be cautious of the possibility that breast hyperplasia and breast cancer may coexist. On one hand, patients with significant hyperplasia should be closely followed up, advised to return to the hospital every two to three months for follow-up examinations. On the other hand, patients with significant proliferative lumps or unclear boundaries in thickened breast areas are recommended to undergo a biopsy of the suspicious lesions to prevent misdiagnosis.