FOLH1 and thyroid gland undifferentiated (anaplastic) carcinoma: PSMA expression has been correlated with tumor size, vascular invasion, radioiodine refractoriness, poor prognosis, and poor progression-free survival (PFS).8, 9The anaplastic thyroid carcinoma (TC) shows lower PSMA expression compared to the differentiated type despite its aggressiveness, likely secondary to its lower microvessel density.