noun \zan-ˈthō-mə\
plural xan·tho·mas also xan·tho·ma·ta \-mət-ə\

Definition of XANTHOMA

: a fatty irregular yellow patch or nodule containing lipid-filled foam cells that occurs on the skin (as of the eyelids, neck, or back) or in internal tissue and is associated especially with disturbances of lipid metabolism

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