** Shares of radiopharmaceutical-focused company Lantheus Holdings LNTH.O fall 2% to $101 in extended trading

** LNTH is weighing a potential sale after getting a takeover offer from private-equity backed Curium Pharma that values it at about $7 billion, Bloomberg News reports

** The cos have been in discussions about a potential deal that could be weeks away, the report says, citing people familiar with the matter

** Lantheus declined to comment

** The reports adds that no final decision has been made and the talks may not result in a transaction

** As of last close, stock up 54.8% YTD