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X cell See cell, X.

xanthelasma A cutaneous deposition of lipid material that appears in the skin of the eyelids, most commonly near the inner canthi. It appears as a yellowish, slightly elevated area. It is a benign and chronic condition that occurs primarily in the elderly. It may be associated with raised blood cholesterol, high-density lipoprotein and triglyceride levels, leading to heart disease or diabetes. Syn. xanthoma; xanthelasma palpebrarum; xanthoma palpebrarum.

See arcus, corneal; plaque, Hollenhorst’s.

xanthogranuloma, juvenile (JXG)

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