The cystic hypersecretory ductal carcinoma of the breast are rare. These lesions of the breast are usually low-graded, but also can be observed as high-graded or invasive carcinomas. A 40-year-old woman admitted with a 3-month history of a mass in her left breast. Examination revealed a 2 cm mobile, painless, soft palpable lump mass in the upper inner quadrant of her left breast. Mammography and ultrasonographic fi ndings were in accordance with fi broadenoma. The cytologic examination of the fi ne needle aspiration biopsy of the mass was reported to be non-diagnostic. An excisional biopsy of left breast was performed. Histopathologic examination revealed invasive cystic hypersecretory ductal carcinoma. The patient refused the modifi ed radical mastectomy and underwent quadrantectomy and axillary dissection. No residual tumor was observed in the quadrantectomy material. Lymph nodes were 0/11. No complication was observed during the postoperative period and underwent adjuvant radiotherapy. Local recurrences or metastasis was not observed in the patient during 18 months follow-up after the radiotherapy.
Keywords: invasive, cystic hypersecretory, breast, carcinoma