Riedel's thyroiditis
(重定向自Riedel thyroiditis)
Riedel's thyroiditis, also called Riedel's struma is a chronic form of thyroiditis.
It is now believed that Riedel's thyroiditis is one manifestation of a systemic disease that can affect many organ systems called IgG4-related disease. It is often a multi-organ disease affecting pancreas, liver, kidney, salivary and orbital tissues and retroperitoneum. The hallmarks of the disease are fibrosis and infiltration by IgG4 secreting plasma cells.