Malignant fibrous histiocytoma
- Malignant fibrous histiocytoma
Infobox_Disease
Name = PAGENAME
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DiseasesDB = 31471
ICD10 =
ICD9 =
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OMIM = 8830/3
MedlinePlus =
eMedicineSubj = radio
eMedicineTopic = 420
MeshID = D051677
Malignant fibrous histiocytoma (MFH) is a type of cancer that is the most common soft tissue sarcoma of late adult life, most commonly occurring between age 50-70. In rare cases MFH does occur in children, but it is usually in a less aggressive form. However, malignant tumors have occurred in children as young as 13. It occurs more often in caucasians than those of African or Asian descent. Its male:female predominance is 2:1.
It can be considered a wastebasket diagnosis for sarcomas that can not be more precisely categorized.[cite web |url=http://library.med.utah.edu/WebPath/NEOHTML/NEOPL045.html |title=Neoplasia |format= |work= |accessdate=] ]Presentation
MFH occurs most commonly in the extremities and retroperitoneum, but has been reported in many other sites (lung, head/neck, etc.). Development of metastasis depends on the tumor's subtype. Metastasis occurs most frequently in the lung (90%), bone (8%) and liver (1%). In the extremities, it presents as a painless enlarging soft tissue mass. It can develop anywhere in the soft tissue, but also occurs at sites of previous radiation treatment, shrapnel implantation or next to prostheses.
It can be divided into two subtypes: "spindle cell" and "pleomorphic".[cite journal |author=Scapolan M, Perin T, Wassermann B, "et al" |title=Expression profiles in malignant fibrous histiocytomas: Clues for differentiating 'spindle cell' and 'pleomorphic' subtypes |journal=Eur J Cancer |volume= |issue= |pages= |year=2007 |pmid=18054831 |doi=10.1016/j.ejca.2007.10.012 |url=http://linkinghub.elsevier.com/retrieve/pii/S0959-8049(07)00797-6] ]Diagnosis
It can be detected by magnetic resonance imaging (MRI), but a biopsy is required for definitive diagnosis.
Treatment
Treatment consists of surgical excision(the extent of which ranges from tumor excision to limb amputation depending on the tumor) and in some cases chemotherapy.
Prognosis
Prognosis depends on the primary tumor size and grade (aggressiveness). 5-year survival ranges from 35-60%.
References
External links
* [http://www.liddyshriversarcomainitiative.org/Newsletters/V02N02/MFH/mfh.htm "Malignant Fibrous Histiocytoma (MFH)" by Carol Morris, MD]
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Look at other dictionaries:
malignant fibrous histiocytoma — any of a group of malignant neoplasms found mainly in soft tissues in middle aged adults; depending on the tumor location and the classification system, the term is sometimes used synonymously with or as a general term including similar lesions… … Medical dictionary
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histiocytoma — n. a tumour that contains macrophages or histiocytes, large cells with the ability to engulf foreign matter and bacteria. See also: fibrosarcoma (malignant fibrous histiocytoma) … The new mediacal dictionary
MFH — malignant fibrous histiocytoma … Medical dictionary
