Brain metastases from unknown primary site.

We report our experience with 32 patients presenting with brain metastasis from unknown origin. This constitutes 11.5 percent of 276 consecutive patients with brain metastasis seen over a period of eight years at the University of Mississippi Medical Center. Patients with solitary resectable lesion underwent surgery followed by irradiation. All patients with multiple metastasis were treated with whole brain radiation and dexarnethasone. The mean survival was 31.50 weeks for patients with single lesion and 19.11 weeks for multiple lesions. The investigations and treatment management of brain metastasis from unknown primary site are discussed.