Surgeons from southern China removed a 4-inch-long blade from a man's head after four years of being lodged there.
Li Fuyan was complaining of of severe headaches, breathing problems, and bad breath without knowing a knife in his head was the cause, ABC News reported.
Fuyan was stabbed by a robber four years earlier, but never realized that the knife broke off, leaving the blade lodged behind the man's throat, narrowly avoiding his carotid artery, the Associated Press said.
Doctors were astounded that the blade narrowly missed every important structure, such as the esophagus and windpipe.
Although the blade was corroded and rusty, the rust should not be a long-term health concern for Fuyan.