Table 1: Immunostaining of our case.

Smooth muscle sarcomatoidMalignant fibrous histiocytoma-like tumor

Vimentin++++
α-Smooth muscle actin++
Desmin++
Muscle-specific actin++
Calponin++
Caldesmon+++
CD99Focal++
CDK4
MDM2
S100
CD34
AE1/AE3
CAM5.2
MIB-1 index5%50%