A 62-year-old woman complained of facial pain. She was diagnosed with trigeminal neuralgia(TN) and had persistent symptoms despite adequate medication. After two years, she was admitted with acute stroke and magnetic resonance image revealed an enhanced solid mass in the left cerebellopontine angle(CPA). The CPA tumor was suggested as possible cause of intractable TN and the pain was relieved after Gamma-knife radiosurgery. We suggest that the comprehensive evaluation of etiology in patients with intractable TN should be recommended. And Gamma-knife radiosurgery can be an alternative treatment option.