1991 Volume 52 Issue 4 Pages 770-775
The diagnosis of subacute thyroiditis is not so difficult when it has typical symptoms. But in the case which has no tenderness of thyroid and no acute inflammatory symptoms, it is difficult to distinguish from another thyroid diseases. Recently we have encountered two cases of subacute thyroiditis. At first they were diagnosed as thyroid cancer because of lacking in typical symptoms. Both cases have a tumor in the thyroid, and we could not distinguish them from thyroid cancers by palpation and ultrasonographic findings. It was valuable to establish the diagnosis of subacute thyroiditis be following the changes in palpation and ultrasonographic findings of the tumors.
