JOURNAL ARTICLE

Advantage of 68Ga-PSMA PET/CT on Postradiotherapy Response Assessment of Juvenile Nasal Angiofibroma

Pirabu Sakthivel, Alok Thakar, Sreedharan Thankarajan Arunraj, Ashu Seith Bhalla, Rakesh Kumar
Clinical Nuclear Medicine 2020 November 3
33156054
Prostate-specific membrane antigen (PSMA) is universally expressed in the endothelial cells of tumor-associated neovasculature of juvenile nasopharyngeal angiofibroma. Functional Ga-PSMA PET/CT also enables easier differentiation of the residual tumor from postoperative changes. An 18-year-old man with the residual intracranial disease received radiotherapy after surgery. In PSMA PET/CT imaging, uptake was noted initially only in the residual disease, and the same was absent after successful response to radiotherapy, unlike contrast MRI, which showed persistent enhancement. Functional Ga-PSMA PET/CT may be a very useful tool clinically for identifying early responses to radiotherapy compared with conventional structural imaging.

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