Kamli Rani, 75 year old-woman present with post myocardial infarction after 6 weeks mild CHF. There was past H/O neck surgery for parathyroid adenoma 5 years ago, ECG shows slow atrial fibrillation. Serum Ca+2 13.0 mg/L and urinary Ca+2 is 300 mg/24 h. On examination there is small mass in the paratracheal position behind the right clavicle. Appropriate management at this time is: