Background: A choristoma is defined as a growth of histologically normal tissue in an abnormal location. Epibulbar osseous choristoma is the rarest type among all ocular choristoma with less than 100 cases reported. Here, we report a case of epibulbar osseous choristoma combined with dermolipoma and a literature review.
Methods: A 15-year-old female patient presented with an accidentally found subconjunctival mass in her left eye. Slit lamp examination revealed a 10 × 10 mm elevated, sigmoid-shaped mass in the supratemporal quadrant of the bulbar conjunctiva. We performed a debulking excisional biopsy of the mass.
Results: The pathology confirmed osseous tissue surrounded by mature adipose tissue. At 1 week after the operation, the wound was clear and the patient was satisfied with the treatment. A systematic literature review of 14 previously published cases taken from PubMed dating back to 1987 along with ours was undertaken. The average age at presentation was 11.6 years and there was a female preponderance with 10 cases being female and the other 5 cases being male. Supratemporal conjunctiva was the most common site of presentation. There was no systemic disease associated with any of the cases. Since it is a benign tumor, it can be managed by observation, but if necessary, it can be treated by surgical removal.
Conclusion: In pediatric subconjunctival mass, particularly located in supratemporal quadrant of bulbar conjunctiva, osseous choristoma should be considered in the differential diagnosis. Pre-operative CT scans will helpful to not also reduce complication with surgical excision but also helpful in prediction of diagnosis and prognosis.
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| http://dx.doi.org/10.1097/MD.0000000000031555 | DOI Listing |
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Article Synopsis
- An ocular osseous choristoma is a rare growth of mature bone found in the eye or surrounding tissue, representing just 1.7% of all epibulbar choristomas.
- The case study discusses a 20-month-old girl with a painless, firm mass at the left lateral canthus, which had been present since birth, and was diagnosed as an osseous choristoma after biopsy.
- The findings suggest that osseous choristomas should be included in the diagnosis of eyelid lesions present from birth and highlight the need for further research on their potential links to eye structures.
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