Moreover, as with conventional imaging modalities, there is a size relationship with regard to lymph node metastases that are missed by PET, although this seems to be considerably lower (around 5 mm) [88,91], and the sensitivity of PSMA PET/CT increases substantially when only lymph nodes measuring more than 3 mm are taken into account [86]. This evidence concerns the gene FOLH1 and metastatic malignant neoplasm in the lymph nodes.