[Autoimmune thyroiditis diagnosis and erroneous diagnosis].

36 cases of autoimmune thyroiditis were studied by BUS, radioisotopic scan, laboratory test and cytological test, 20 patients were confirmed pathologically. Two cases were complicated with carcinoma. We analysed the causes of the misdiagnosis and considered the importance of TGAb and TMAb pasitive; cytological and pathological examinations are of key importance.