"Disease or Syndrome"^^ . "Riedel_s_Fibrosing_Thyroiditis"^^ . . "Riedel's Fibrosing ThyroiditisSYNCI" . "C35827"^^ . "C1335787"^^ . "Riedel Fibrosing Thyroiditis"^^ . "Riedel Fibrosing ThyroiditisPTNCI" . "An inflammatory disorder of unknown etiology that affects the thyroid gland. It is characterized by extensive fibrosis of the thyroid parenchyma. The fibrosis extends beyond the thyroid gland capsule to the adjacent structures.NCI" . . "Riedel Fibrosing Thyroiditis"^^ .