fibrous histiocytoma

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Related to fibrous histiocytoma: malignant fibrous histiocytoma, benign fibrous histiocytoma


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.

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.


; 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


composed of or containing fibers.

fibrous bone
cardiac fibrous skeleton
includes a ring around each of the atrioventricular valves and each of the great arteries leaving the heart; between the rings are the right and left fibrous trigones.
fibrous dysplasia
localized overgrowth of fibrous tissue in bone.
fibrous feeds
feeds high in fiber, cellulose and lignin.
fibrous growth plates
growth plates composed of fibrocartilage such as that for the tibial tubercle.
fibrous histiocytoma
see malignant fibrous histiocytoma.
fibrous hyperplasia
indistinguishable clinically from fibromatous epulis.
fibrous joint
1. a joint whose bony elements are united with fibrous tissue. See suture (1), syndesmosis.
2. stiffness in a joint due to fibrous tissue reaction in the joint capsule and other supporting structures.
fibrous osteodystrophy
fibrous rings
bands of fibrous tissue surrounding the semilunar valves of the aorta and pulmonary artery and the atrioventricular valves.
fibrous tissue
the common connective tissue of the body, composed of yellow or white parallel elastic and collagen fibers.
References in periodicals archive ?
Malignant fibrous histiocytoma must be differentiated from other sarcomas, sarcomatoid carcinoma, and renal cell carcinoma.
Cutaneous cellular fibrous histiocytoma metastasizing to the lungs.
Malignant fibrous histiocytoma in rats at sites of implanted Millipore filters.
Malignant fibrous histiocytoma (MFH), also known as pleomorphic undifferentiated sarcoma not otherwise specified (NOS), originates in the interstitial cells that differentiate fibroblasts and histiocytes.
Malignant fibrous histiocytoma of the spermatic cord in a patient with policystic kidney disease: Review of the literature.
The most common malignancy includes osteosarcoma (~70%), with fibrosarcoma (~20%), chondrosarcoma (~10%), and malignant fibrous histiocytoma (~4%) occurring less frequently.
This case represents a very rare example of carcinosarcoma/sarcomatoid carcinoma (CS/SC) of the urinary bladder with a malignant fibrous histiocytoma component that was characterized by morphologic and imrnunohistochemical (IHC) analysis.
Malignant fibrous histiocytomas are a rare subtype of sarcoma in comparison to leiomyosarcoma (2).
Of the radiation-induced sarcomas, approximately 70% are malignant fibrous histiocytoma, which tends to be an aggressive type of tumor.
8) Sarcomas metastatic to the thyroid are extremely rare and occur almost exclusively in cases of malignant fibrous histiocytoma (undifferentiated pleomorphic sarcoma), leiomyosarcoma, and liposarcoma.
Malignant fibrous histiocytoma (MFH) is synonymous with high-grade undifferentiated pleomorphic sarcoma and essentially represents a diagnosis of exclusion.
Differential diagnosis for lesions that centered within the thyroid or crycoid cartilage includes giant cell reparative granuloma, brown tumor of hyperparathyroidism, osteoblastoma, chondroblastoma, chondrosarcoma, chondroma, aneurysmal bone cyst, nonossifying fibroma, foreign body reaction, benign fibrous histiocytoma, malignant fibrous histiocytoma, osteosarcoma with abundant giant cells, and carcinoma (including spindle cell or sarcomatoid carcinoma) with giant cells.