“…Although not part of the objectives of this study, it was interesting to see that encephalitis caused by anti-N-methyl-daspartate receptor onconeuronal antibodies can be associated with cerebral hypo-metabolism. 23 Concerning limitations, the low prevalence of malignancy in our sample of patients led to a more effective analysis of the diagnostic performance of PET-CT. This issue has meant that authors have referred to the PET-CT as over-valued regarding to its role in the detection of occult neoplasia in patients with NPS.…”