In this paper we report two interesting cases of metastatic ovarian cancer. The first case is a patient who developed rectal and breast metastases mimicking an inflammatory breast cancer. In the second case, subclinical breast and axillary lymph node metastases were revealed by PET/CT. Metastases in the breast originating from solid tumors are extremely rare. The ovarian primitive is the fourth most common origin. The occurrence of breast metastasis is associated with an advanced disease and a poor prognosis. Their incidence is increasing since they are found more often due to better imaging techniques and to better treatment that, accordingly, improve patients' survival. Thus, unusual sites of metastases are more and more reported. Indeed, some authors reported the occurrence of colorectal metastases from ovarian cancer. However, they remain much less frequent.
Case 1In November 2010, a 61 year old Moroccan housewife was diagnosed with a stage IV poorly differentiated serous ovarian adenocarcinoma (peritoneal, mediastinal and retroperitoneal lymph node metastasis). The patient had a medical history of diabetic neuropathy and hypertension. Her family history noted a sister and a niece who were respectively diagnosed with pancreatic cancer and breast cancer. A retroperitoneal lymph node biopsy was performed to obtain tumor tissue for histological diagnosis. Given the spread of the disease it was decided to administer chemotherapy first. Since she had a contraindication to taxane-based regimens because of her peripheral neuropathy, the patient received 3 cycles of Cyclophosphamide 600 mg/m 2 and Carboplatin AUC 5 in the first cycle and AUC6 in the subsequent cycles, every three weeks. The response assessment with PET-FDG after the third cycle showed partial response. One and a half months after the third cycle of chemotherapy, she underwent debulking surgery. The treatment was completed by two additional cycles of chemotherapy of the same combination.Three months after the end of treatment, a CT scan showed progressive disease in the mediastinal and abdominal lymph nodes. The patient received Liposomal Doxorubicin 40 mg/m 2 q4w, as second line chemotherapy. The response assessment after three cycles showed disease progression. Since the patient had been asymptomatic, it was decided to wait and see.Four months later, in January 2012, the patient presented with skin erythema and edema of the right breast. The clinical examination found ipsilateral supraclavicular lymph node swelling. The patient also complained of a diarrhea, which was resistant to standard treatments. Breast MRI showed breast and chest edema with multiple non-specific contrast uptakes giving the aspect of a homogeneous enhancement. The patient underwent sigmoidoscopy that revealed extended ulcerations of the lining of the rectum ( Figure 1A). The breast and rectal biopsies showed a positive staining of PAX8 by immunohistochemistry ( Figure 1B). Both lead to a diagnosis of metastasis from the known serous ovarian neoplasia. The patient was ...