. Author manuscript; available in PMC: 2017 Feb 1.

Published in final edited form as: Am J Surg Pathol. 2016 Feb;40(2):212–223. doi: 10.1097/PAS.0000000000000560

Table 4. Clinicopathologic characteristics of fusion positive versus fusion negative thoracic myoepithelial tumors.

	EWS/FUS fusion positive	Fusion negative
Number of cases (n)	4	4
Mean age (yrs)	50	58
Male : female ratio	1:3	3:1
Endobronchial/tracheal	2	2
Cytomorphology	Spindle and clear cells in all cases	Epithelioid component in all cases
Mitoses/2 mm² (mean & range)	2 (0-6)	<1 (0-2)
Necrosis (n)	3	1