Minnesota Sen. Jim Metzen is undergoing treatment at the Mayo Clinic in Rochester for a recurrence of lung cancer, according to a note from his legislative colleague.

“It is with a great deal of sadness that I inform you that our Senator, Jim Metzen, is facing a serious health issue,” Rep. Rick Hansen, DFL-South St. Paul wrote in an e-mail to constituents.

Metzen, DFL-South St. Paul, is one of the Legislature’s longest-serving members. He was elected to the House in 1974 and elected to the Senate in 1986. This is his ninth term. He serves as chair of the Senate Commerce Committee and is a former Senate president.

Well-wishers may contact Metzen and his wife, Sandie, by card or letter at 312 Deerwood Court, South St. Paul, MN 55075