At entry, patients will have a complete history and physical, blood tests, ultrasound, and will complete questionnaires. Eligible patients will take Thalidomide 400 mg once a day in the evening. Patients will start a dose of 100 mg per day for two weeks, increasing by 100 mg per day every two weeks to a maximum dose of 400 mg per day for 6 months. Patients will return at 6 months for an evaluation, blood tests and completion of questionnaires. Blood tests will be performed by mailed-in kits at 3 months. Patients will receive weekly phone calls for the first 2 months and bi-monthly thereafter.