This spindle cell rhabdomyosarcoma arose in the sinus region, and the patient presented with facial swelling. The myogenin is patchy with more abundant MYOD1 staining. Some tumors of this type have MYOD1 gene mutations. www.innovativesciencepress.com
Case provided by Dr. Elizabeth Montgomery, Clinical Professor, Vice Chair of Faculty Development & Mentoring, Director of Surgical Pathology Fellowship Training Program, Co-Director, Pathology Reference Services, and Editor-In-Chief at Innovative Science Press.
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