 Minnesota governor says he's suffered lung damage while recovering from back surgery, keeping him at the Mayo Clinic for more than a month. Governor Mark Dayton underwent two spinal fusion surgeries last month to improve his leg strength and had been expected to be released from the hospital within days. His office gave no formal update on his status until this week when a Dayton spokeswoman confirmed he had remained at the hospital for what was described as physical therapy. The 71-year-old governor said in a statement that post-surgical complications had damaged his lungs. Dayton said he had stayed at the Mayo Clinic to treat his lungs on his doctor's recommendation. Governor Dayton is expected to be released in the next few days. He will leave office on January 8th. If you enjoyed this segment of Lakeland News, please consider making a tax-deductible contribution to Lakeland PBS.