On Monday's edition of Wrestling Observer Radio (sub needed), Dave Meltzer reported that Koba Ibushi is suffering from Mallory-Weiss Syndrome and will remain off the remainder of the current New Japan Pro Wrestling U.S. tour.
The syndrome is an issue when there is a tear in the mucous membrane where the esophagus meets the stomach caused by trauma to the chest or stomach, violent vomiting due to food poisoning, or heavy lifting.
Meltzer said it's not a long-term issue, but is rare for a male under 40 to suffer from it. Most tears will heal within ten days, but surgery is sometimes required for more serious Mallory-Weiss tears.
The 37-year-old is expected to make a full recovery. As of now, he is still scheduled for the February 9th Road To The New Beginning show in Osaka as part of an eight-man tag.
Originally, Ibushi was pulled from the tour due to what was believed to the flu. The tour ends this Saturday in Atlanta, GA.