FOLH1 and metastatic malignant neoplasm in the lymph nodes: At PET2, 48 PSMA positive metastases were analyzed in n = 13 patients (mean of 3.7 metastases/patient): n = 13 lymph node metastases, n = 13 osseous metastases, n = 1 hepatic metastasis, n = 17 pulmonary metastases, n = 1 soft tissue metastasis, n = 3 other metastases (n = 1 adrenal gland, n = 2 peritoneal).