A 78-year-old woman was admitted to the hospital because of worsening dysphagia and odynophagia.For three years, she had had dysphagia, with a sensation of solid food catching in the upper esophagus, which had worsened during the six months before admission. The dysphagia was followed by the coughing up of mucus for as long as an hour and by painful "spasms" in the neck that were provoked by swallowing medication or food. She had lost 4 to 7 kg in weight during the two years before admission. A barium-swallow examination performed elsewhere 26 months before admission showed a hiatal hernia and esophageal spasm. A barium-swallow study performed at this hospital 17 months before admission (Fig. 1) showed a large paraesophageal hiatal hernia, with reflux during the examination. The esophagus did not distend well, especially in the upper portion. A 13-mm barium pill, administered with a large volume of water, did not move below the level of the aortic arch. No evidence of active ulceration was observed at that point or elsewhere. Three weeks before admission an esophagealmotility study revealed that the tone of the lower esophageal sphincter was in the low-normal range. An examination with a pH probe disclosed abnormal gastroesophageal reflux in both the proximal and the distal ports of the probe, with delayed clearance of acid. The patient was admitted to the hospital.She had a lifelong history of the irritable bowel syndrome, which was well controlled by increased dietary fiber. A barium-enema examination and a sigmoidoscopic examination 10 years before admission had been normal. Mild asthma, induced by exercise and exposure to cold air, had been present for two years and was managed by infrequent use of inhaled medications. The patient took levothyroxine for primary hypothyroidism. An appendectomy had been performed many years ear-lier, and a biopsy of a benign breast lesion had been performed four years before admission. The patient did not smoke and drank little alcohol. There was no history of vomiting, hematemesis, hematochezia, melena, or jaundice. Her medications included a transdermal estrogen preparation, medroxyprogesterone acetate, levothyroxine, and an albuterol inhaler.The temperature was 37.6 ° C, the pulse was 78, and the respirations were 18. The blood pressure was 130/65 mm Hg.Physical examination was normal; a stool specimen was negative for occult blood.The urine was normal, as were a complete blood count and the values for urea nitrogen, creatinine, glucose, bilirubin, calcium, phosphorus, sodium, potassium, aspartate aminotransferase, amylase, and alkaline phosphatase. An electrocardiogram showed sinus bradycardia at a rate of 56, with a left anterior hemiblock and an intraventricular conduction defect. Radiographs of the chest revealed a retrocardiac opacity consistent Figure 1. Film from the Barium-Swallow Examination Performed 17 Months before Admission, Demonstrating an Area of Esophageal Narrowing, 5 cm Long, at the Level of the Aortic Arch and above It. No ulceration is evident. A hiatal ...