MINNEAPOLIS -- Red Sox outfielder Mike Cameron is returning to Boston to meet with team doctors Friday after an initial diagnosis here showed a possible kidney stone, his agent said Friday morning.
"I spoke to Cam last night,'' agent Mike Nicotera wrote in a message. "Seems to be a kidney stone that he needs to pass. He's going to follow up with doctors in Boston today.''
Cameron was scratched from the starting lineup before Thursday's game after complaining of lower abdominal pain. He was briefly examined by a Twins team doctor before it was determined he should remain behind.
Initially, it was thought Cameron might have had appendicitis.
"I'm just pretty sore,'' Cameron said. "It's unusual. I've never experienced anything like it.
"I was able to come here and stretch, try to get loose, went outside and ran, but could hardly even walk after that. If there was a dog after me, I had no chance today.''
Outfielder Jacoby Ellsbury, meanwhile, said he is scheduled to see a doctor in Boston on Friday as he continues to experience pain in the aftermath of his collision Sunday with third baseman Adrian Beltre.
Ellsbury said he continues to feel a sharp pain in his left rib area when he tries to draw a deep breath. He said he tried taking some swings off the tee Thursday morning, but that it was painful.
"I'm sure there's swelling, but I don't want to make any predictions or whatever on what's going on," he said.
He all but ruled out playing Friday night in Fenway Park against the Tampa Bay Rays.
The Sox are facing the possibility of needing to place both Cameron and Ellsbury on the disabled list.
Darnell McDonald and Josh Reddick would seem to be the most likely call-ups from Pawtucket if the Sox need to make a move. Reddick was not in Thursday's starting lineup for Triple-A Pawtucket in Buffalo, N.Y., which could indicate the Red Sox were making contingency plans in the event of a roster move.
Pawtucket manager Torey Lovullo, however, told ESPNBoston.com it was simply a day off for Reddick.
"[Reddick] has been grinding away at things pretty good," Lovullo said. "I thought about [giving him a day off] a couple of days ago, but he responded with a couple of hits. The best thing about Red is that you wouldn't know by looking at his pace of play that he's not hitting the way he wants to. He's as good as anybody we have getting down the line. He's laying out for balls in the outfield. He's just doing a great job all the way around outside of getting his base hits. It's going to come and I just wanted to give him a mental break and let him catch his breath."
The 23-year-old outfielder, who made his major league debut with the Red Sox last season, has one hit in his last 13 at-bats. He's hitting .138 in seven games for the PawSox.
ESPNBoston.com's Joe McDonald contributed to this report from Buffalo, N.Y. Gordon Edes covers the Red Sox for ESPNBoston.com.