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Case Reports
. 2025 Jul 26;17(7):e88793.
doi: 10.7759/cureus.88793. eCollection 2025 Jul.

Solitary Fibrous Tumor in the Orbit: A Rare Occurrence

Jai Sethi  1 , Arpit M Chhabra  2 , Athena M Loiacono  3 , Thomas R Eanelli  4
Affiliations
Case Reports

Solitary Fibrous Tumor in the Orbit: A Rare Occurrence

Jai Sethi et al. Cureus. .

Abstract

Solitary fibrous tumors (SFTs) of the orbit are exceptionally rare neoplasms. We present the case of a 77-year-old female who first presented in 2021 with a spindle cell neoplasm in the superior right orbit. Following surgical excision and a negative PET scan, she opted for surveillance without adjuvant radiation therapy. Three years later, MRI revealed a recurrence of the orbital SFT. The patient underwent a second surgical resection and adjuvant proton radiation therapy to reduce the risk of further recurrence. This case draws attention to the importance of long-term follow-up in orbital SFTs and highlights the potential role of targeted proton therapy for managing recurrent cases.

Keywords: orbital tumor; proton beam therapy; radiation oncology education; solitary fibrous tumor (sft); targeted radiation therapy.

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Conflict of interest statement

Human subjects: Informed consent for treatment and open access publication was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.

Figures

Figure 1
Figure 1. Diagnostic image showing a solitary fibrous tumor in the superior right orbit of the patient.
Figure 2
Figure 2. Images of proton radiation therapy plan.
Red contours indicate the clinical target volume and represent the tumor target to which 60 Gy of radiation has been prescribed. A, B, C, D, and E display images of the tumor at different CT slices.
Figure 3
Figure 3. Isodose planning images.
Images display the isodose lines, which correspond to 60 Gy (100% of prescription dose), 57 Gy (95% isodose line), and 30 Gy (50% isodose line) to show the stopping power of protons and the ability to spare surrounding normal tissues (brain, contralateral eye, nerves).
See this image and copyright information in PMC

References

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