A 3-year-old manifests the sudden onset of drooling and coughing. He is anxious and refuses to eat. His voice is normal, and his lung examination results also are normal. The most likely diagnosis is

A 3-year-old manifests the sudden onset of drooling and coughing. He is anxious and refuses to eat. His voice is normal, and his lung examination results also are normal. The most likely diagnosis is

A 9-year-old white male presents with a 3-month history of epigastric abdominal pain that is intermittent, aching, and lasts for 10-15 minutes. Pain is also present at night. Stool examination for occult blood is positive. The most likely diagnosis is

The disease in Question 51 is also noted with higher prevalence in patients with all of the following EXCEPT

Laboratory studies for the patient in Question 58 reveal serum aminotransferases of 900 IU/L, a total bilirubin of 8 and a direct of 4, serum IgG of 16 g/L, a positive ANA, and a positive anti-liver kidney microsomal antibody titer.

A 2-year-old child is evaluated 18 months after an unsuccessful portoenterostomy (Kasai) procedure to treat extrahepatic biliary atresia.