"epidemiology"
"presentation"
"pathophysiology"
"investigation"
"treatment"
"prognosis"
"NG tube in the vomiting patient"
Expected headings
"This is a basic article for medical students and other non-radiologists"
"Plain radiograph"
"CT"
"This is a summary article; read more in our article on large bowel obstruction."
"constipation, nausea and vomiting"