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Right posterior thigh irregular inter-muscular soft tissue mass lesion. The lesion measures 8 x 9cm in max axial diameters. It elicits heterogeneous signal with linear bands of dark signal on all pulse sequences (band sign). It shows marked contrast enhancement with nonenhancing linear band. It also shows feathery margins giving the (flame sign). the lesion displaces the adjacent muscles with surrounding fat rim giving the (fat rim sign). It encases the patent popliteal vessels.