Can Breast Fibroadenoma Become Cancerous?
Whether breast fibroadenoma can undergo malignant transformation is one of the most concerning issues for patients and clinicians alike, as it directly affects prognosis and clinical management. Generally, the risk of malignant transformation is very low, estimated at about 0.2%. Malignant changes are more likely to occur during pregnancy and lactation, or in older patients with longer disease duration.
Malignant transformation of fibroadenoma most commonly manifests as sarcomatous change, while carcinoma is less common. Most scholars believe that breast cancer is unrelated to fibroadenoma; some suggest that when a patient with mammary hyperplasia also has fibroadenoma, the risk of developing cancer increases; others point out that fibroadenoma occurring in postmenopausal women carries a higher risk of malignancy.
Therefore, generally speaking, if diagnosed with breast fibroadenoma, there is no need to panic, especially for young women around 20 years old, who should not worry excessively. Regular monitoring by a clinician is sufficient. If deemed necessary, medication may be used temporarily. If the tumor continues to grow steadily in recent times, elective surgery is recommended. For those planning pregnancy, removal prior to conception may be considered.
Although the proportion of malignant transformation in breast fibroadenoma is extremely low, clinical vigilance is still warranted, particularly in patients over 35 years old with tumors exceeding 2 cm, who should generally undergo surgical excision.
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