Long disease-free survival (48 months) in a breast cancer patient with ovarian and pelvic metastasis—a case report

Breast cancer is one of the most common malignant tumors in woman. Ovarian and pelvic metastasis in breast cancer are very rare, and the prognosis is often poor. Lacking typical clinical manifestation, misdiagnose is common. We report a case about a middle-aged postmenopausal woman with complaints of finding a left breast mass and irregular vaginal bleeding. Through ultrasound-guided core-needle biopsy of the masses, the patient’s final diagnosis was breast cancer with ovarian and pelvic metastasis. The patient received combinations of chemotherapy (intravenous infusion or peritoneal perfusion), radical surgery (gynecological operation and modified radical mastectomy), radiation and endocrine therapy. Forty-eight months follow-up showed that the patient is generally in good condition and had no signs of local recurrence or metastasis. Invasive ductal carcinoma (IDC) of the breast with unilateral ovarian and pelvic metastasis is rare. It is not easy to differentiate from primary ovarian malignant tumor, and the prognosis is generally poor. We chose a combination chemotherapy regimen sensitive to both breast and ovarian tumors for the patient. The therapeutic effect is remarkable. Only a small number of tumor cells were found in pelvic and ovarian tumors. The patient’s breast tumors reached pathological complete remission (pCR), which might be the reason for the patient’s good prognosis.