Pneumocephalus has been reported to have many causes. To our knowledge, a case of tension pneumocephalus caused by subarachnoid-esophagus fistula has not been reported previously. In this report, an unusual case of tension pneumocephalus, which appeared after esophageal cancer disrupting paravertebral tissue resulted in subarachnoid-esophagus fistula, is presented and the involvements in tension pneumocephalus are discussed.
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