Rhabdomyosarcoma A malignant tumor of striated muscle. Gross Appearance: •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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