Table 1: Selected immunohistochemical stains a san aid to the diagnosis of spindle cell tumors of the skin.

Variable	Atypical fibroxanthoma	Dermatofibroma protuberans	Angiosarcoma	Spindle cell SCC	Leiomyosarcoma	Our Case
S100	-	-	-	-	R	-
Desmin	-	-	-	-	+	+
CD34	V	+	V	-	R	-
Factor VIII	-	-	+	-	-	-
CK	-	-	-	+	V	-
EMA	-	-	-	V	-	-
SMA	V	V	V	R	+	+

SCC: squamous cell carcinoma; CK: cytokeratin; EMA: epithelial membrane antigen; SMA: smooth muscle actin; R: rarely positive; V: variable; -: negative; +: positive.