. EGYPTIAN EXAMPLES OF SOFT TlSSU.E SARCOMAS, PATHOLOGICAL AND IMMUNO•HISTOCHEMICAL STUDY

Abstract

Soft tissue sarcoma (STS) comprise a heterogeneous group of relatively rare malignant tumors of mesenchymal origin (Martin et al., 1976).

It is reported that the histological grade was found to be essential for choosing an appropriate treatment for (STS) and . to be the most important single prognostic factor in predicting survival and disease free intervals (Albus et al., 1986). The grade of malignancy remained the most difficult to define and it could not be adequately assessed because of the relative rarity and complex

I histologic features of STS ( Coinder et al., 1986).

Also the grading system takes into account the histogenetic type and

subtype of tumor . However many sarcomas are too poorly differentiated to i exhibit morphologic features specific enough to define their histogenesis. So

that accurate . identification by morphological criteria alone is • limited

(Enterline, 1981 and Angervall et al., 1986).

Using the immunoperoxidase technique, enable more accurate diagnosis to be made ( Du -Bouly, i985).