Pittsburgh Penguins defenseman Olli Maatta had surgery Tuesday to remove a tumor in his thyroid gland, the Penguins said.
Penguins doctors had said it was possible that the tumor was a form of low-grade thyroid cancer. The results of pathology testing to determine whether the tumor was malignant will be available within 7-10 days.
"Even if it is found to be cancerous, we do not expect that he will need radiation or chemotherapy, and we anticipate a complete recovery," Dharmesh Vyas, the Penguins team physician, said in a statement. "The surgery went well, and Olli is resting comfortably."
The surgery was performed by University of Pittsburgh Medical Center head and neck surgeon Robert Ferris.
The Penguins said Maatta is expected to be able to return to the lineup within four weeks. The 20-year-old defenseman has one goal and five assists and is plus-1 in 10 games this season. He has averaged 19:59 of ice time.