A variegated histological pattern is observed in spindle cell rhabdomyosarcoma including (A) smooth muscle-like appearance (case RMS3), (B) fibrosarcoma-like features (case RMS9), (C) occasionally mimicking MPNST (case RMS8) and (D) a hypocellular, densely collagenized background in a sclerosing RMS (RMS18). (A, original magnification 100×; B-C, original magnification 200×).