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Indian J Nucl Med. 2019 Jul-Sep;34(3):247-248. doi: 10.4103/ijnm.IJNM_38_19.

Incidental Detection of Urinary Bladder Herniation in 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Mimicking as Metastatic Deposit in the Inguinal Canal.

Author information

1
Department of Nuclear Medicine and PET/CT, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
2
Department of Hepatology, Post Graduate Institute of Medical Education and Research, Chandigarh, India.

Abstract

Although 18F-fluorodeoxyglucose (FDG) is the most extensively used tracer in oncological positron emission tomography/computed tomography (PET/CT) studies, various physiological as well as benign pathological conditions are known to cause false-positive results. This report describes 18F-FDG PET/CT done in an elderly man with primary hepatocellular carcinoma, revealing a metastasis mimicking lesion in the left inguinal canal, which was identified as the herniated portion of the urinary bladder. Though rare, bladder herniation, especially with a narrow neck, can be a pitfall in the evaluation for metastatic disease. The study also highlights the utility of delayed imaging in the evaluation of pelvic pathology.

KEYWORDS:

18F-fluorodeoxyglucose; bladder herniation; hepatocellular carcinoma; inguinal canal; pitfall

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