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n. pl. xan·tho·mas or xan·tho·ma·ta (-mə-tə)
A yellowish-orange, lipid-filled nodule or papule in the skin, often on an eyelid or over a joint.

xan·thom′a·tous (-thŏm′ə-təs) adj.


(zænˈθəʊmətəs; zænˈθɒmətəs)
(Pathology) pathol of, relating to, or marked by xanthoma
References in periodicals archive ?
148) Other histologic findings may include chronic inflammation, mast cells, xanthomatous histiocytes, hemosiderin, calcifications, cholesterol clefts, and large lamellar structures.
Since its first observation in the lung in 1939, many different terms have been coined to describe IPT, such as inflammatory myofibroblastic tumor, plasma cell granuloma, inflammatory myofibrohistiocytic proliferation, inflammatory fibrosarcoma, xanthoma, xanthogranuloma, fibroxanthoma, histiocytoma, xanthomatous pseudotumor, plasmocytoma, and solitary mast cell granuloma, indicating the complex and diverse nature of this entity (1).
Xanthomatous lesions of the central nervous system: Definition, classification and some recent observations.
Primary form is typically autoimmune, granulomatous, necrotizing or xanthomatous in nature(18).
On microscopy, the cellular infiltrate is constituted by macrophage-like mononuclear cells, epithelioid histiocyte-like cells, osteoclast-like giant cells, and xanthomatous cells.
Atypical multiple, papilliform, xanthomatous, cutaneous neoplasia in a goose (Anser anser).
The ECD is characterized by xanthomatous or xanthogranulomatous infiltration of tissues by foamy histiocytes, "lipid-laden" macrophages, or histiocytes, surrounded by fibrosis [1] (Figure 3A).
Hemosiderin deposition and clusters of xanthomatous cells were also identified (Figures 3(b) and 3(c)).
Tumors of the eyelids can be classified based on origin such as tumors of the epidermis/dermis, tumors of melanocytic origin, and those of glandular, neural, vascular, metastatic, xanthomatous, histocytic, and inflammatory origin.
4] Because of its histological heterogeneity, it has received many names over the past years, including plasma cell pseudotumor, inflammatory pseudotumor, xanthomatous pseudotumor, pseudosarcomatous myofibroblastic proliferation, inflammatory myofibrohistiocytic proliferation, atypical fibromyxoid tumor and atypical myofibroblastic tumour.
This lesion is also known as a plasma cell granuloma, myofibroblastoma, inflammatory myofibroblastic tumor, and xanthomatous pseudotumor, and it occurs as the result of an inflammatory myofibroblastic proliferation and a pseudosarcomatous fibroinflammatory process.
4 However, in some cases histoid leprosy presents as xanthomatous eruption,5 lesions similar to molluscum contagiosum,6 umbilicated lesions,7 tuberous xanthomatous dermal manifestations,8 and gigantic dermal lesions.