The Defense Department plans to review all military mental health cases dating to 2001 to ensure troops were not denied appropriate diagnoses or service-related benefits, Defense Secretary Leon Panetta said Wednesday.

At a hearing before the Senate Appropriations Committee, Panetta said he ordered the service chiefs to review the case files of all current and former troops who were screened for medical separation by a medical evaluation board for mental health issues.

The Army already has such an investigation underway; in May, that service announced it was conducting a service-wide survey of behavioral health cases after problems surfaced at Madigan Army Medical Center, Wash., where more than 100 soldiers received diagnoses of post-traumatic stress disorder that were later overturned.Click here to read more from the AirForceTimes