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Rhabdomyoma of the orbit in a child
Y Hatsukawa1, A Furukawa, H Kawamura
1Department of Ophthalmology, Osaka Medical Center, Japan.
Insights
Orbital rhabdomyoma, a rare benign tumor, was diagnosed in a 16-month-old boy presenting with proptosis. Histology confirmed a benign striated muscle tumor, with no recurrence during follow-up.
Area of Science:
- Ophthalmology
- Pediatric Oncology
- Pathology
Background:
- Rhabdomyoma is a rare benign tumor of striated muscle.
- Orbital tumors in children can present with proptosis.
- Distinguishing benign rhabdomyoma from malignant rhabdomyosarcoma is crucial for treatment.
Observation:
- A 16-month-old boy presented with progressive right proptosis.
- Computed tomography revealed a retrobulbar mass.
- Partial resection and subsequent histological examination were performed.
Findings:
- Histology confirmed a benign orbital rhabdomyoma.
- The tumor consisted of well-differentiated striated muscle cells.
- No nuclear atypia was observed, and no regrowth occurred during follow-up.
Implications:
- Orbital rhabdomyoma is a rare but important diagnosis in pediatric ophthalmology.
- Accurate differentiation from rhabdomyosarcoma is essential for guiding treatment strategies.
- Benign orbital rhabdomyoma may not require further intervention after diagnosis.
Purpose:
To study a case of rhabdomyoma of the orbit in a 16-month-old boy.
Method:
The child had progressive right proptosis for 1 month. He underwent a computed tomographic scan, which showed an irregular right retrobulbar mass and partial resection.
Results:
Histologic examination disclosed well-differentiated striated muscle cells with a mixture of collagen fibers and immature striated muscle cells with centrally placed nuclei. The specimen lacked nuclear atypia, indicating benign rhabdomyoma of the orbit. During the 1 1/2-year follow-up, the patient did not receive additional treatment, and no regrowth occurred.
Conclusion:
Rhabdomyoma can occur in the orbit of a child. Because of differences in treatment, rhabdomyoma must be distinguished from rhabdomyosarcoma.