dermatofibroma


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dermatofibroma

 [der″mah-to-fi-bro´mah]
a fibrous tumorlike nodule of the skin, usually on the extremities and especially the legs. Its etiology is not known, but it is most likely a neoplastic disorder. Although it is benign, itching and pain can be a source of severe discomfort.

der·ma·to·fi·bro·ma

(der'mă'tō-fī-brō'mă),
A slowly growing benign skin nodule consisting of poorly demarcated cellular fibrous tissue enclosing collapsed capillaries, with scattered hemosiderin-pigmented and lipid macrophages. The following terms are considered by some to be synonymous with, and by others to be varieties of, dermatofibroma: sclerosing hemangioma (2), fibrous histiocytoma, nodular subepidermal fibrosis.

dermatofibroma

[dur′mətōfībrō′mə] pl. dermatofibromas, dermatofibromata
Etymology: Gk, derma + L, fibra, fiber, oma, tumor
a cutaneous nodule that is painless, round, firm, gray or red, elevated, and commonly found on the extremities. No treatment is required. Also called fibrous histiocytoma.

benign fibrous histiocytoma

A benign tumour composed of primitive mesenchymal cells (macrophages or histiocytes) seen in the skin and soft tissues of the legs of young to middle-aged patients, more commonly women, usually in relation to skeletal muscle.
 
Management
Excision.

der·ma·to·fi·bro·ma

(dĕr'mă-tō-fī-brō'mă)
A slowly growing benign skin nodule consisting of poorly demarcated cellular fibrous tissue enclosing collapsed capillaries, with scattered hemosiderin-pigmented and lipid macrophages. The following terms are considered by some to be synonymous with, and by others to be varieties of, dermatofibroma: sclerosing hemangioma, fibrous histiocytoma, nodular subepidermal fibrosis.
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DERMATOFIBROMA
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DERMATOFIBROMA

dermatofibroma

(der?ma-to-fi-bro'ma) [? + L. fibra, fiber, + Gr. oma, tumor]
A firm but freely movable benign skin nodule, often found on the lower extremities.
See: illustration; dimple signillustration

dermatofibroma

; histiocytoma cutis; fibrous histiocytoma sclerosing haemangioma: common benign fibroma of extremities; flat/slightly raised flesh-coloured/yellowish-brown, firm/hard, non-progressive, isolated lesions usually <1 cm in diameter; palpable bulk of lesion extends beyond its visible outline

dermatofibroma

a fibrous tumor-like nodule of the skin.
References in periodicals archive ?
Finally, malignant neoplasms that may mimic dermatofibroma include dermatofibrosarcoma protuberans, giant cell tumor of the skin (a low-grade sarcoma) (10), nodular melanoma, basal cell carcinoma, and sclerosing sweat duct carcinoma (11).
Metastasising dermatofibroma or dermatofibroma-like dermatofibrosarcoma protuberans?
Indeterminate fibrohistiocytic lesions of the skin: is there a spectrum between dermatofibroma and dermatofibrosarcoma protuberans?
Sclerosing sweat duct carcinoma mimicking dermatofibroma.
Sebaceous hyperplasia: A clue to the diagnosis of dermatofibroma.
The histologic differential diagnosis of hyalinizing Spitz nevus includes dermatofibroma, desmoplastic cellular blue nevus, metastatic carcinoma, and malignant melanoma.
Benign skin lesions include dermatofibromas (5), (16) and desmoplastic cellular blue nevi.
D2-40 may represent a helpful adjunct in distinguishing between dermatofibromas (DFs) and dermatofibrosarcoma protuberans (DFSP), which can occasionally be difficult.
However, HHV8 is not entirely limited to KS and has been detected in some angiosarcomas, hemangiomas, and dermatofibromas.
The clinical and microscopic manifestation of SHML should be differentiated from malignant lymphoreticular neoplasias, such as Hodgkin's disease and monocytic leukemia, histiocytosis, rhinoscleroma, tuberculosis, juvenile xanthogranuloma, dermatofibromas, and eosinophilic granuloma, among others.
Maurer suggested performing a biopsy to distinguish KS from benign dermatofibromas.