Kamli Rani 75 yrs old woman present with post myocardial infarction after 6 weeks with mild CHF. There was past WO neck surgery for parathyroid adenoma 5 years ago, EKG shows slow atrial fibrillation. Serum Ca+213.0 mg/L and urinary Ca2+ is 300 mg/ 24 hr. On examination their is small mass in the Para tracheal position behind the right clavicle. Appropriate management at this time is -