[Etiology of Secondary Hyperlipidemia and Abnormalities of Lipid Laboratory Tests -Chairmen's Introductory Remarks -].

When diagnosed with hyperlipidemia, type classification should be performed first. Next, in conjunction with a medical interview about any family history of hyperlipidemia, secondary hyperlipidemia should be dis- tinguished and the treatment of underlying disease should take priority. Administering LDL-lowering ther- apy with HMG CoA reductase inhibitors (statins) to patients with a hypothyroid state without a differential diagnosis of secondary hyperlipidemia may be associated with a high risk of myopathy and liver dysfunction. This symposium was organized to shed light on the etiology of secondary hyperlipidemia and abnormalities of lipid laboratory tests because medical care for secondary hyperlipidemia is of marked significance. Lipid metabolism disorders induced by diabetes, endocrine diseases, liver diseases, renal diseases, and drug thera- pies were presented by respective specialists. All of the contents will benefit medical care and the examina- tion of dyslipidemia in the future, and they are also useful for routine medical activities. [Review].