Why on earth does radiology insist on oral contrast?

Small Bowel Obstruction – Oral contrast is contraindicated in suspected in SBO. IV contrast is preferred, but not required.

Suspected appendicitis – Oral contrast is not required, but may be beneficial in extremely thin individuals (e.g. BMI < 18), or non-obese children.

Suspected diverticulitis – Oral contrast is not required

Unclear etiology – PO contrast is suggested by some experts in undifferentiated abd pain if the patient is very thin (e.g. < 120 pounds, BMI < 18); has had a Roux-en-Y gastric bypass; or has and inflammatory bowel disease that could produce a fistula

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