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Updated: Sep 28, 2025
05:42
Author Spotlight: Unlocking the Mysteries of Oral Potential Malignancies
Published on: August 11, 2023
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Epithelioid and Spindle Cell Rhabdomyosarcoma of the Oral Mucosa with FUS Rearrangement
Adam R Ochsner1, Robert D Foss2
1Carl R. Darnall Army Medical Center, 36065 Santa Fe Ave, Fort Hood, TX, 76544-5060, USA.
Head and Neck Pathology
|March 30, 2022
Summary
Newly identified FUS gene rearranged epithelioid and spindle cell rhabdomyosarcoma, an aggressive cancer, presents uniquely in the head and neck. Familiarity with this rare subtype is crucial for accurate diagnosis and treatment.
Area of Science:
- Oncology
- Pathology
- Genetics
Background:
- Rhabdomyosarcoma classification is evolving with the identification of novel subtypes.
- These variants are often defined by specific genetic alterations and exhibit distinct characteristics.
Observation:
- A case of a newly characterized FUS gene rearranged epithelioid and spindle cell rhabdomyosarcoma is presented.
- The tumor manifested as an intra-oral mucosal lesion without bone involvement.
Findings:
- The case exhibited features consistent with FET-TFCP2 fusion rhabdomyosarcoma.
- Strong pancytokeratin expression was a notable immunophenotypic finding.
Implications:
- This rare and aggressive rhabdomyosarcoma subtype shows a predilection for head and neck locations.
- Awareness of this entity is essential to prevent diagnostic errors and guide patient management.
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