Hemiballismus and brain metastases from squamous cell carcinoma of the cervix.

BACKGROUND: Brain metastases from cervical carcinoma are rare. Accompanying symptoms depend on the location of the metastatic lesions. Hemiballismus refers to a rare movement disorder characterized by involuntary, large amplitude movements of the limbs of one side of the body. The area of the brain controlling the limb movement is in the subthalamic nucleus of the contralateral side. In contrast, the usual location of brain metastases from cervical cancer is in the frontal and parietal parenchyma. There have been reported cases of hemiballismus secondary to metastatic carcinoma of the breast, lung, and gall bladder. This is the first reported case of putative cervical cancer metastases associated with hemiballismus. CASE: A 38-year-old Caucasian female was diagnosed with FIGO stage II-B poorly differentiated squamous cell carcinoma of the cervix. Para-aortic lymph nodes were positive for metastatic disease. The patient was treated by radiation with hydroxyurea chemosensitization. Four months after the initial diagnosis she presented with acute onset of hemiballismus. Magnetic resonance imaging of the head revealed a solitary lesion in the left cerebral peduncle extending into the inferior aspect of the left basal ganglia complex. The lesion was inaccessible to biopsy or excision. Palliative radiation therapy to the brain was unsuccessful and the patient expired 1 year following primary presentation. CONCLUSION: Treatment of hemiballismus is directed to its underlying causes. Some brain metastases from cervical cancer may be palliated or even cured by surgical resection and radiation therapy. Although not conclusive, it appears that hemiballismus in a setting of metastatic cervical cancer has a poor prognosis and little benefit from irradiation.