Primary cutaneous leiomyosarcoma in a young patient previously misdiagnosed as pleomorphic fibroma

۳% of - Cutaneous leiomyosarcoma is a relatively rare tumor accounts for about ۲
superficial soft tissue sarcomas. It occurs more frequently in males in fifth and sixth
decades with a predilection for extremities.We report a ۲۷ years old male with
cutaneous leiomyosarcoma of thigh, previously diagnosed as pleomorphicfibroma.
The tumor composed of pleomorphic spindle shaped cells with blunt ended nuclei
and high mitotic activity. Smooth muscle actin was positive.In this case, the young
age of the patient and previous misdiagnosis of the tumorare interesting.Subtle
histologic features of low grade leiomyosarcomacan be a pitfall in diagnosis and so
affects the optimal management of the patient as it occurred in previous sample of
this case.