Fig. 5From: Complete mimicry: a case of alveolar rhabdomyosarcoma masquerading as acute leukemiaPathology of tumor in perineal muscle. a Rebiopsy of perineal muscle indicated similar pathological features characterized as alveolar RMS and confirmed the pathological diagnosis. b An immunohistochemical staining revealed positivity for vimentin, desmin, myoglobin, myogenin and MyoD1 were all positive, whereas CK, synaptophysin, and S-100 were negative. Original magnification of 40×Back to article page