Diagnostic immunohistochemistry in uterine sarcomas: a study of 397 cases.

The purpose of this study was to evaluate the use of a broad panel of antibodies used as diagnostic markers for abdominal mesenchymal tumors in uterine sarcomas. The expression of vimentin, AE1/AE3, smooth muscle actin (SMA), desmin , h-caldesmon, actin, Myf4, CD10, CD31, CD68, CD117, factor VIII, HMB-45, and S-100 protein was studied in 397 uterine sarcomas. SMA was positive in 90% of the ordinary leiomyosarcomas and when combined with desmin or h-caldesmon, a positivity of 96% and 92%, respectively, was achieved.