History: abdominal pain. Can you get the diagnosis from the scout?
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Gossypiboma aka retained surgical material
Look for the balled up radiodense string. I recommend to give oral contrast on the CT as a balled up sponge/pad can look a lot like fecal material.
ref: nice AJR Article: https://www.ajronline.org/doi/10.2214/AJR.07.7132