Accidental Finding of Bladder Cancer in 99mTc Methylene Diphosphonate Whole-Body Bone Scan

ABSTRACTA 53-year-old woman with a history of nasopharyngeal carcinoma underwent Tc methylene diphosphonate (MDP) whole-body scintigraphy for tumor staging. An MDP-avid lesion located in the urinary bladder was found. Computed tomography showed a protruding mass with calcific surface in the left inferolateral wall of the urinary bladder. A biopsy was conducted and the pathological report confirmed the diagnosis of transitional cell carcinoma. The patient received transurethral resection and Bacillus Calmette-Guérin intravesical therapy. Four months later, she underwent an F-FDG PET/CT scan. Unfortunately, tumor recurrence in the bladder cancer was diagnosed by the F-FDG PET/CT scan.