An unusual metastatic breast cancer presentation Report of a case

Bone is the second most common site of metastasis in breast cancer and bone metastases usually occur in the advanced stages of the disease(1). Breast cancer metastases are usually multiple and frequently involve more than one organ site(2). Bone metastases are usually multiple, affecting the vertebral body and pelvis. They usually appear as lytic and blastic lesions(3). A single metastasis rarely occurs and must be differentiated from primary bone tumor(1), and solitary metastasis of breast cancer is rare. In our case no evidence of other skeletal metastatic sites were detected and she only had a single metastasis in clivus. We decided to report this case because of its interesting presentation. There are a few case reports of skull base metastasis of breast cancer, mostly involving hypoglossal nerve(3). Diplopia is usually caused by brain metastasis or cranial nerve involvement(1), but in our case there was no evidence of brain involvement. CASE REPORT