COLUMBUS, Ohio -- Kosta Karageorge, the Ohio State defensive lineman who committed suicide at the end of November, did not have CTE, according to the Ohio State pathologist who studied Karageorge's brain.

However, Karageorge, a former wrestler with the Buckeyes who joined the football team as a walk-on for the 2014 season, was found to have "prior concussive injury" according to the report released by the Franklin County Coroner's Office on Friday.

Dr. Norman Lehman at The Ohio State University Medical Center conducted the tests. Franklin County Coroner Dr. Anahi Ortiz said the coroner's office typically uses Ohio State to conduct tests for CTE. Ortiz had previously ruled Karageorge's death a suicide.

CTE is chronic traumatic encephalopathy, a condition that results from repeated head trauma. It can only be diagnosed after death. Symptoms of CTE can include depression, confusion and rage issues. Many football players who have dealt with concussions and then taken their own lives were found to have CTE, including former All-Pro linebacker Junior Seau.

CTE in younger players has been found less frequently. One of the youngest cases was found in 21-year-old former University of Pennsylvania football player Owen Thomas, who killed himself five years ago.

Karageorge, 22, was found dead of gunshot wound in a trash dumpster near his campus area apartment on Nov. 30, 2014. He had gone missing four days earlier after leaving his apartment late at night.

According to the investigative report from the Columbus Division of Police, Karageorge was upset after a fight with his girlfriend. He sent texts to his family that night that his head had been bothered "from these concussions," and texts to others that he was going to kill himself.