Carolina Panthers receiver Curtis Samuel underwent surgery resulting from an irregular heartbeat, NFL Network's Ian Rapoport reported Tuesday.
According to Rapoport, Samuel is "likely out" for Sunday's game against the Dallas Cowboys.
Earlier in the day, Panthers head coach Ron Rivera said Samuel had missed practice because he was "dealing with a medical issue," per Bill Voth of the team's official website.
A Week 10 ankle injury required season-ending surgery and landed the 22-year-old on injured reserve.
Even before the injury, Samuel had endured a disappointing rookie year.