Malignant Fibrous Histiocytoma is currently consideredas one of the most frequent Sarcomas of SoftParts in adults. This is merely a preliminary repor ofthree cl'inical cases of this histo1o·gical variety to whichno reference is made in our literature. There followsa brief bibliographic review and an account of itsmost important anatomo-clinical therapeutical characteristics.This is a predominantly pleomorphic tumor,with characteristic histological pattern and its histogenesisis still the subjet of controversy.

Se considera actualmente al Histi.ocitoma FibrosoMaligno como uno de los Sarcomas dePartes Blandas más frecuentes del adulto. Sepresentan como comunicación preliminar, tresobservaciones clínicas de esta variedad his,tológicano referida en nuestro medio. En unabreve revisión bibliográfica se enumeran suscaracteres anátomo clínico