Schmorl’s Node: Confusion Still Persists in 68Ga–Prostate-Specific Membrane Antigen Ligand PET/CT

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Abstract

68Ga–prostate-specific membrane antigen (PSMA) ligand PET/CT is commonly believed to be prostate specific as the name itself suggests. However, PSMA-expressing nonprostatic cancers as well as benign lesions are continuously being added to the list. We reported PSMA-expressing Schmorl’s node in L1 vertebra of a 74-year-old man with prostate cancer. Prostate-specific membrane antigen expression in the vertebral lesion raised a metastatic suspicion. However, on analysis of previous CT scan done 2 years before, the same lesion was observed with no significant interval change, confirming its benign nature. With more use of PSMA ligand PET/CT, more limitations and false positivities will be explored.

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