Chinese man had a knife in his head for 4 years

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The man went to the hospital looking into getting treatment for what he thought might be a hearing problem, but x-rays showed a metal blade instead.

He told doctors it might have gotten stuck in his head when he got into a fight with a robber four years ago.

After that fight, he suffered frequent headaches, bleeding in his mouth, and at times, it was difficult for him to swallow food.

He had several examinations, but the cause of those symptoms were never found.