The wife of Detroit Lions quarterback Matthew Stafford announced on Instagram Wednesday she's been diagnosed with a brain tumor and will have surgery to remove it later this month.

Kelly Stafford wrote in a lengthy post she began to notice something was off when she started to feel dizzy when showing her kids how to front roll or twirl in ballet and then had a vertigo spell in January. She said her initial bloodwork showed nothing wrong, but the Lions doctor recommended she get an MRI for her brain.

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“A few days later we were hit with the results,” she wrote. “I had a tumor sitting on some of my cranial nerves. The medical term they used was an acoustic neuroma or vestibular schwannoma.. All I heard was brain tumor & that they had to do surgery to take it out.. so that is what we are going to do & we believe we found the best doctor to do it.”

Stafford wrote that she’s “terrified” and asked for prayers in her time of need.

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“Things to pray for: -calmness in these next 2 weeks as I know anxiety will run high in myself & my whole family leading up to the day of surgery. -that God be in the room with the surgeons & give them all the guidance, steadiness, & confidence they need. -my safety during and after surgery. -please pray for matthew as I know his nerves will be high during this surgery.”

Matthew and Kelly Stafford married in 2015 and have three daughters.