This supplemental report is being submitted to provide additional information.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.Omsc reviewed the manufacture history (dhr) of the subject device and confirmed no irregularity.The exact cause of the reported phenomenon could not be conclusively determined.However, based upon the information from olympus korea, there was the possibility that this phenomenon was attributed to the physical stress or the chemical stress, the poor condition of the storage cabinet, such as environment exposed to the direct daylight, high temperature, elevated humidity, x-ray and/or ultraviolet, in the user facility, or the aging deterioration due to the long-term use, and so on.
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