<s>[INST] I am a 46 yo female. I had a CVA in 2006, 2007 an MRI showed 1 menegioma less than 1 cm. In 2010 another MRI showed that same Tumor at just over 2 cm and 2 more smaller ones in different areas. The 2 cm Tumor is in the left cerebellum attached to a major blood vessel. My symptoms are dizziness, some blurred vision, almost constant headaches and balance issues. I chose not to do radiation and now my Doctor wants me to have it surgically removed. What will happen if I do nothing since it is located there? [/INST] Hello, The tumor may continue to grow in size, causing more severe symptoms such as severe headache, imbalance, dizziness, vomiting, etc. In some cases, patients can go into coma also, if there is bleeding in the tumor. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Sudhir Kumar, Neurologist </s>