XANTHOMA

(Lat.), n. n. Za2nth(zasnth)-om'a. From favflds, yellow. Fr., xanthome. Ger., Xanthom. A neoplastic disease of the skin, occurring most commonly, though not always, near the inner or outer canthus of the eye and usually symmetrically, in the form of soft elevations or flat patches of a light or dark-yellow color, due to new formation of connective ti ue together with a deposit of fat in the corium and subcutaneous areolar ti ue. [G, 2.] X. diabeticorum, X. diabeticum. An eruption of dull-red, discrete or confluent papules, firm to the touch, that have well-defined margins, are roundish or obtusely conical, and may have a solid yellow or yellowish white head, occurring on the forearms first, then on other parts of the body of persons affected with diabetes mellitus. [Crocker (o, 34).] X. multiplex. X. in the form of multiple tumors di eminated over the body. [G.] Cf. XANTHOMA TO SIS. X. planum. A variety of x. that appears in the form of yellowish-white or lemon-yellow patches but slightly elevated above the surface, situated' most commonly near the angles of the eyes or on the lids, usually appearing symmetrically on both eyes. It also occasionally occurs on other parts of the face or on certain of the mucous membranes. fG.] X. tubercula tum, X. tuberculosum, X. tuberosum. X. characterized by milium-like yellowish-white nodules or tubercular elevations occurring either singly or in groups, and situated usually on the face (though rarely on the eyelids) and on various regions of the trunk and extremities, especially about the joints. They also occur as flattened elevations on the palms or soles. [G.] [s. 735]