Presentation of Case A 77-year-old man was admitted to the hospital because of an inability to walk of acute onset. The patient was in a stable state of health until three months earlier, when he began to experience difficulty in swallowing solids, with a sensation that food stuck low in the neck; his appetite decreased, and he consumed less food than usual. Two months before admission, fever and nausea occurred, with a burning pain over the upper dorsal region at about the level of the fourth thoracic vertebra. A physician found that the temperature was 38.9°C and noted a loss….
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