Solitary fibrous tumor of the male breast: a case report and review of the literature

Table 1 Main morphological features of mesenchymal lesions of the breast

Tumor type	atypia	vascular component	hemorrhage	necrosis	mitoses	CK	EMA	Vim	CD34	Bcl2	CD99	actin	desmin	S100
Solitary fibrous tumor	no	prominent	no	no	rare	-/+	+/-	+	+	+	+	-/+	-/+	-/+
Myofibroblastoma	no	present	no	no	rare	-	-	+	+/-	+/-	+/-	+	+	-
Fibromatosis	no	scarce	no	no	rare	-		+				-/+	-	-
Hemangiopericytoma	mild	abundant	no	rare	variable			+	+/-		+/-	-/+	-/+
Nodular fascitis	no	abundant	red cell extravasion	no	present	-						+	+/-	-
Inflammatory myofibroblastic tumor *	mild	abundant	no	no		-/+		+				+/-	+	-
Leiomyoma	no	normal	no	no	rare	-	-	+	-	-	-	+	+	-
Metaplastic carcinoma	yes	normal	no	rare	present	+	-/+	+	-			+		-
Myoepithelioma	mild	normal	no	no	present	+			-			+	-	+
Pseudoangiomatous stromal hyperplasia	no	pseudovascular spaces	no	no	no	-	-	+	+	-	-	+	-	-

CK: cytokeratin; EMA: epithelial membrane antigen; Vim: vimentin; *: ALK positive

ISSN: 1477-7819