Cerebellar
metastasis sometimes causes symptoms such as
ataxia and
dizziness, or
hydrocephalus by compression of the fourth ventricle, making
emergency treatment necessary. We report two cases for whom we performed emergency stereotactic
radiotherapy, and whose
tumors decreased and symptoms improved. Case 1: A 58-year-old male was diagnosed with
small cell lung cancer in December 2008, and received
chemotherapy and conventional
radiotherapy at another hospital. He developed difficulty in walking and experienced
nausea from March 2010 on. Because neoplastic lesions had been found in the cerebellar vermis on computed tomography(CT)scan, he was referred to our hospital. We urgently performed stereotactic
radiotherapy by CyberKnife, and his symptoms then improved. As a chest CT scan revealed a mass lesion in his right upper lobe, the diagnosis of recurrent
small cell lung cancer was made, and we performed
chemotherapy sequentially. Case 2: A 73-year-old female experienced severe
headache and
dizziness and noticed difficulty in walking in July 2010. Because neoplastic lesions had been found in the left cerebellar hemisphere on CT scan at another hospital, she was referred to our hospital. Chest
X-ray films showed a mass lesion in the left middle lung field and cytologic examination of sputum showed
squamous cell carcinoma. We urgently performed stereotactic
radiotherapy by CyberKnife, and her symptoms then improved. Therefore, we performed
chemotherapy sequentially.
CONCLUSION: