Intramuscular solitary fibrous tumor: A clinicopathological case study

We present a case of extrapleural solitary fibrous tumor arising within the muscle, an unusual and hitherto-undescribed tumor lesion. A 42-year-old wo man presented a painless mass in her left thigh. The lesion was depicted as an intramuscular mass that enhanced on both CT and MRT, showing quite rich tumor vascularity. The histological features of the tumor were spindle cel l proliferation with various histological patterns, typical fibrocollagenou s background, and positive immunoreactivity for CD-34.