MEDICAL DICTIONARY
Xanthoma: Yellowish firm nodules in the skin frequently indicating underlying disease, such as diabetes , disorder of fats ( lipid disorder or hyperlipidemia ), or other conditions. A xanthoma is a kind of harmless growth of tissue.
Under the microscope , a xanthoma can be seen to be composed of lipid-laden foam cells. These cells, termed histiocytes, contain lipid material in their cytoplasm (the nonnuclear zone of the cell).
The word "xanthoma" is made up of " xanth- " from the Greek roots "xanthos" (yellow) and "oma" (swelling) = a yellow swelling. A xanthoma is a circumscribed yellow swelling, a yellowish nodule .
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