focal lymphocytic thyroiditis

fo·cal lym·pho·cyt·ic thy·roi·di·tis

focal infiltration of the thyroid by lymphocytes and plasma cells.
See also: Hashimoto thyroiditis.
References in periodicals archive ?
Amyloid is usually present extracellularly as an amorphous, eosinophilic proteinaceous substance on light microscopy, commonly seen infiltrating the parenchyma, distorting the normal tissue architecture and eliciting a variable degree of foreign body giant-cell reaction with associated moderate to severe, often focal lymphocytic thyroiditis.