Carlos Gonzalez had a tumor removed from his left index finger Tuesday, according to the Colorado Rockies.

Gonzalez underwent exploratory surgery with a specialist in Cleveland, and a growth was found beneath the sheath around the muscle.

"We're still not sure (what it is)," trainer Keith Dugger said. "But it's a type of tumor within the sheath of the finger. There's a hard substance underneath it. We're going to do a biopsy on it."

"They are common," Dugger added. "These little benign tumors — which we hope it is — are probably the second-most-common finding in a finger besides cysts."

Gonzalez is hitting .255/.307/.449 in 212 plate appearances this season.