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Case of the Day
Retroperitoneal alveolar rhabdomyosarcoma
Contributed by Ryan Thibodeau
This is a case of a retroperitoneal alveolar rhabdomyosarcoma.
The patient underwent a CT-guided core biopsy. Histopathology revealed scattered and clustered malignant cells with a high nuclear-to-cytoplasmic ratio, irregular chromatin, and irregular nuclear membranes. The atypical cells were positive on immunohistochemical stains for myogenin and desmin. Similar-appearing…
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