USMLE® Step 1 style questions USMLE
A 57-year-old woman comes to the clinic because of malaise and intermittent episodes of “food sticking in my throat.” She believes she may have lost several pounds over the past month because of reduced oral intake to avoid the problem. Physical exam demonstrates flat-appearing fingernails and angular cheilitis. Barium swallow shows an upper esophageal web. Which of the following is the most likely diagnosis?