OBJECTIVE:To investigate the prognostic significance of LSD1 expression in patients with thyroid carcinoma.METHODS: The expression of LSD1 in resected samples from thyroid carcinoma patients was detected by immunohistochemistry.RESULTS: LSD1 was localized mainly to the thyroid cell nucleus.Immunohistochemical studies demonstrated that LSD1 expression was higher(94.7%) in thyroid carcinoma than that in thyroid adenoma(73.3%,U=-3.190,P=0.001).LSD1 expression was less frequently in precancerous tissue(34.8%) t...