histiocytoma - definition of histiocytoma in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia.

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histiocytoma /his·tio·cyt·oma/ (his?te-o-si-to´mah) a tumor containing histiocytes (macrophages).

benign fibrous histiocytoma any of a group of benign neoplasms occurring in the dermis and characterized by histiocytes and fibroblasts; the term sometimes encompasses several types of neoplasms, such as dermatofibroma, nodular subepidermal fibrosis, and sclerosing hemangioma and sometimes is synonymous with one of these.

malignant fibrous histiocytoma any of a group of malignant neoplasms containing cells resembling histiocytes and fibroblasts.

his·ti·o·cy·to·ma (h

-s

-t

)

n. pl. his·ti·o·cy·to·mas or his·ti·o·cy·to·ma·ta (-m

-t

)

A tumor composed of histiocytes.

histiocytoma

a tumor containing histiocytes.

Histiocytoma. By permission from Kummel BA, Color Atlas of Small Animal Dermatology, Mosby, 1989

atypical histiocytoma

Merkel cell tumor.

benign cutaneous histiocytoma

multiple, dermal histiocytic nodules in young dogs; no clinical significance, eventually disappear.

transmissible histiocytoma

canine transmissible venereal tumor.

Surgical Tumor types Thorotrast DU Ta control Benign tumors Benign fibrous histiocytoma 0 1 0 0 Fibroma 0 1 (a) 0 0 Granular cell myoblastoma 1 0 0 0 Malignant tumors Malignant fibrous histiocytoma 13 7 (a) 2 0 Fibrosarcoma 10 2 0 0 Osteosarcoma 1 2 0 0 (a) One rat had two tumors associated with separate implants.

Implanted depleted uranium fragments cause soft tissue sarcomas in ... by Hoover, Mark D. / Environmental Health Perspectives

To date, clinical trials of these compounds have failed to show sufficient efficacy to warrant their continued development, although we will continue testing piritrexim for the treatment of malignant fibrous histiocytoma," said Love.

ILEX Oncology Announces Third Quarter Results; Company Remains on ... by Business Wire

Other lesions to be included in the histologic differential diagnosis are solitary myofibroma, fibrous histiocytoma, desmoid tumor, and spindle cell lipoma.

Solitary fibrous tumor of the floor of the mouth: case report and ... by O'Leary, Gerard / Ear, Nose and Throat Journal

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