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Limbus sign The limbus sign is a ring of dystrophic calcification evident as a "milky precipitate" (i.e. abnormal white color) at the corneal limbus. The corneal limbus is the part of the eye where the cornea (front/center) meets the sclera (white part of the eye). Thought to be caused by increased calcium concentration in the blood, this sign however persists after calcium phosphate concentration returns to normal.〔Orient, Dr. Jane M. (2011). (Amazon Sapira's Art & Science of Bedside Diagnosis (Kindle Edition) ) Lippincott Williams & Wilkins. Retrieved January 7, 2012.〕 Compare the limbus sign (calcification) with arcus senilis (lipid).〔Edwards, Mark E. (2008). (Geriatric physical diagnosis: a guide to observation and assessment. ) McFarland & Company. p. 96. Retrieved January 7, 2012.〕 ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Limbus sign」の詳細全文を読む
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