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Pitfall of 18 F-PSMA PyL PET/CT Imaging of a Displaced Urinary Bladder as Recurrent Prostate Malignancy
Sanjit O Tewari1, Zeyad A Metwalli2, Guofan Xu1
1From the Department of Nuclear Medicine, Division of Diagnostic Imaging.
Abstract:
We herein present a potential pitfall in the setting of restaging PSMA PyL PET/CT. In this case, there is large non-PSMA-avid cystic structure in the mid pelvis, probably representing a postprostatectomy lymphocele, which was mistaken for the urinary bladder, resulting in the displaced and somewhat crescentic urinary bladder to be deemed recurrence. Subsequently, biopsy and retrospective review of images confirms displaced urinary bladder containing physiologic excreted activity.
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