Riedel’s thyroiditis can be diagnosed if certain histopathologic features are present in the thyroid gland.
Histologic criteria for Riedel’s thyroiditis:
(1) There is inflammation of the thyroid gland that extends into adjacent tissues.
(2) Occlusive phlebitis should be present.
Exclusions - The following should be absent:
(1) granulomas and/or giant cells
(2) oncocytes (Hurthle cells)
(3) lymphoid follicles
(4) thyroid carcinoma
Supportive findings:
(1) plasma cells positive for IgA and/or IgG4
(2) antithyroid antibodies in the serum
(3) elevated IgG4 in the serum
(4) presence of normal thyroid tissue sharply demarcated from the inflammatory process
To read more or access our algorithms and calculators, please log in or register.
Specialty: Endocrinology, Clinical Laboratory
ICD-10: ,
