Differential of spindle cell tumours of the pleura

	CD34	bcl-2	CD99	cytokeratin	EMA	calretinin	desmin	SMA
SFT	+	+	+	-	-	-	some, focally	rare, focally
desmoid tumour	-			-	-		+	+
sarcomatoid mesothelioma	-	some	some	+	+	+	some	+
synovial sarcoma	-	+	variable	+	+
pleural thymoma, WHO type A	-	some	lymphocytes only	+	-	stromal cells only
smooth muscle tumour	some	some	some				+	+
haemangiopericytoma	+		variable				-	-
neurofibroma	most	+
schwannoma	some	+
malignant peripheral nerve sheath tumour	rare	some		rare (may be cytokeratin positive if epithelioid areas are present)			rare (may be positive if rhabdomyoblastic areas are present)	rare (may be positive if rhabdomyoblastic areas are present)
spindle cell lipoma	+	+
calcifying fibrous pseudotumour	variable			-		-	-