A 26-year-old woman presents with a breast mass that was detected on self-examination 1 week earlier. Mammography reveals a round, sharply demarcated 1-cm nodule in the right breast (shown in the image). Biopsy of the breast mass shows neoplastic epithelial ductal structures situated within a fi bromyxoid stroma. The patient refuses further treatment and informs you that she wishes to become pregnant. Which of the following is the most likely effect of pregnancy on this breast lesion?
- Development of invasive ductal carcinoma within the lesion
- Fibrocystic change with sclerosing adenosis
- Formation of intraductal papilloma
- Metastasis to regional lymph nodes
- Rapid growth