Penguins’ Maatta to undergo surgery for tumor Pittsburgh Penguins defenseman Olli Maatta is scheduled to undergo surgery next week to remove a tumor from his neck that could be a low-grade thyroid cancer. “Olli will have surgery to remove the tumor,” said Dr. Dharmesh Vyas, the Penguins’ t… Author: sportallinfo Published: 27 ottobre 2014 Categories: NHL