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European society for pediatric gastroenterology, hepatology, and nutrition CF working group definition for distal intestinal obstruction syndrome (DIOS) in cystic fibrosis
| 1 | Complete intestinal obstruction as evidenced by vomiting of bilious material and/or fluid levels in small intestine on abdominal radiography |
| 2 | Fecal mass in ileocecum |
| 3 | Abdominal pain and/or distension |
Complete DIOS: 1, 2, and 3
Incomplete/impending DIOS: 2 and 3, without 1
