Most patients typically present with a nonpainful, rapidly growing thyroid mass often associated with airway obstruction, dysphonia, hoarseness, hypoparathyroidism, dysphagia, or stridor.
Physical examination reveals a large goiter with a hard or woody texture. At the time of presentation, approximately one-third of patients present with extracervical manifestations of multifocal fibrosis, including retroperitoneal, mediastinal, pulmonary, or lacrimal gland fibrosis; orbital pseudotumor; sclerosing cholangitis; or fibrosing parotitis.
E06.5 – Other chronic thyroiditis
89024000 – Riedel's thyroiditis
Differential Diagnosis & Pitfalls