Subdiaphragmatic Gallstone Mimicking Hepatic Malignancy on FDG PET/CT

ABSTRACTA 70-year-old man underwent an FDG PET/CT for a possible primary liver malignancy or metastasis found on an abdominal MRI obtained as part of a workup for intermittent abdominal pain. The MRI showed an enhancing lesion at the dome of the right lobe of the liver. The lesion was FDG avid with...

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Bibliographic Details
Published in:Clinical nuclear medicine 2015-04, Vol.40 (4), p.347-348
Main Authors: Kim, Jisoo, Siegel, Alan, Yen, Stephanie P, Seltzer, Marc
Format: Article
Language:English
Subjects:
Aged
Carcinoma - diagnostic imaging
False Positive Reactions
Fluorodeoxyglucose F18
Gallstones - diagnostic imaging
Humans
Liver Neoplasms - diagnostic imaging
Male
Multimodal Imaging
Positron-Emission Tomography
Radiopharmaceuticals
Tomography, X-Ray Computed
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Summary:ABSTRACTA 70-year-old man underwent an FDG PET/CT for a possible primary liver malignancy or metastasis found on an abdominal MRI obtained as part of a workup for intermittent abdominal pain. The MRI showed an enhancing lesion at the dome of the right lobe of the liver. The lesion was FDG avid with a discrete central calcification. In conjunction with the patient’s history of laparoscopic cholecystectomy 1 year prior, the findings were consistent with inflammation around a migrated subdiaphragmatic gallstone. One month after the scan, a CT-guided percutaneous biopsy of this lesion revealed chronic inflammatory cells with no evidence of malignancy.
ISSN:0363-9762
1536-0229
DOI:10.1097/RLU.0000000000000658