Abstract
Abstract: A clear understanding of normal physiological distribution of the radiopharmaceutical, commonly encountered normal variants, and benign pathologic uptake is important to avoid mistaken diagnosis on an F-18 FDG PET scan. The distribution of FDG in the bowel is variable and may occasionally lead to diagnostic pitfalls. Chilaiditi sign is a well-known anatomic variant and describes the interposition of bowel between the liver and diaphragm. The authors present a case where an apparent abnormality in the liver on an FDG PET only study was proven to be due to bowel activity related to Chilaiditi sign on CT correlation.
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