A malignant tumor of striated muscle.
•Loosely arranged, disorganized, variably-sized pleomorphic cells
•Often with hyperchromatic nuclei
•Deeply eosinophilic cytoplasm
•Hallmarks of the tumor are so-called "racket" and "strap" cells
•Diagnosis depends on immunostaining for myogenic components (eg. desmin and myoglobin)
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