The patient in Question 40 is carefully evaluated. All electrolytes are normal, a plain abdominal x-ray (KUB) reveals multiple air fluid levels, but the barium small bowel follow-through is negative for an anatomic site of obstruction. The most likely etiology of the patient's distention and vomiting is

The patient in Question 40 is carefully evaluated. All electrolytes are normal, a plain abdominal x-ray (KUB) reveals multiple air fluid levels, but the barium small bowel follow-through is negative for an anatomic site of obstruction. The most likely etiology of the patient's distention and vomiting 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.

Dysphagia is best described as