Bilateral osseous choristoma

Epibulbar complex cartilaginous choristoma: A distinctive clinicopathological case series and literature review

To newly describe the clinical and histopathological characteristics of epibulbar complex cartilaginous choristoma incidentally observed in a series of pterygium excision patients.Noncomparative case series with chart review of 8 patients.During a 4-year period, we identified 8 cases of conventional unilateral nasal subpterygial cartilaginous choristoma in 1799 pterygium patients and analyzed their clinicopathological features. The incidence rate of this entity is 0.44% in pterygium patients. All of the cartilaginous choristomas were buried deep in the caruncle, covered by the pterygium, and embedded in tenon facia tissue. Its clinicopathological characteristics include hyaline cartilaginous tissue that is surrounded by fibrous connective tissue and smooth muscle bundles. S-100 protein-staining specifically revealed chondrocytes embedded within chondroid matrix.Epibulbar complex cartilaginous choristoma covered by pterygia and predominantly observed in the older population is rare. The lesions were buried deep in the caruncle, covered by the pterygium and embedded in tenon fascia tissue. These findings are inconsistent with those in previous reports.

Epibulbar osseous choristoma

The topic of this case report is a rare subconjuctival osseous choristoma that corresponded to the left lateral sunconjunctiva and canthus. A 20-year-old man was asymptomatic when he arrived for the examination. His full ophthalmic examination was normal. Orbital computerized tomography was concordant with osseous lesion. Osseous choristomas are the rarest forms of ocular choristomas, they are usually being defined as sporadic, and they are found at the superior temporal region of the episclera. In our case, choristoma was in the lateral canthus of the left eye. We had administered surgical excision by reason of the patient's cosmetic requirement. We had noted that the lesion was adherent to conjunctiva but not to the sclera and the muscles. After surgical treatment, we saw mature heterotrophic osseous tissue in subconjunctival area and Haversian canals in compact bone tissue.

Dermolipoma of the lower eyelid

PURPOSE

To report a rare case of isolated dermolipoma of the lower eyelid.

DESIGN

Case report.

RESULTS

A young otherwise healthy girl presenting with a slowly progressive, painless lesion of the left lower eyelid of about 3 years' duration had undergone conservative management elsewhere for symptoms of intermittent, mild irritation associated with the mass without any significant benefit. Increase in the size of the lesion in the recent past had been noted. Mass excision with histopathology showed it to be consistent with a dermolipoma.

CONCLUSIONS

An eyelid dermolipoma is distinctly uncommon in occurrence. Nonetheless, it should be considered in the differential diagnosis of benign mass lesions of the eyelid.

Osseous choristoma of the lateral canthus

Ocular osseous choristoma, a rare idiopathic benign deposit of bone, is typically a static epibulbar lesion that occurs sporadically in the supertemporal quadrant of an otherwise normal eye. The subject of this report is a unique U-shaped subcutaneous osseous choristoma that did not involve the eye itself but rather conformed to the right lateral canthus in an otherwise normal 2-year-old boy.

Bilateral symmetrical epibulbar osseous choristoma

PURPOSE

To report a patient with bilateral symmetrical epibulbar osseous choristoma.

DESIGN

Retrospective observational case report.

PARTICIPANT

One patient with bilateral symmetrical epibulbar osseous choristoma.

METHOD

Retrospective review of stored office records, photographs, computed tomography (CT), and histopathological findings.

MAIN OUTCOME MEASURES

Appearance of the choristoma, CT, and histopathological findings.

RESULTS

A 6-year-old female had bilateral superotemporal subconjunctival masses. Surgical excision was performed bilaterally. The lesions were encapsulated and attached to the sclera, and consisted histopathologically of epibulbar osseous choristoma.

CONCLUSION

We report the first case of bilateral symmetrical epibulbar osseous choristoma without other associated choristomas. Preoperative CT imaging is helpful in assessing the extent of the tumor and planning surgery.

Bilateral ocular osseous choristomas

Choristoma is a benign tumour defined as normal tissue in an ectopic location. Osseous choristoma, one subtype of this entity, occurring within the orbit has rarely been reported in the world literature. We report a 6-year-old girl with bilateral ocular osseous choristomas who presented with palpable nodules protruding from both upper lids. The radiological and clinical findings are described and previous reports are reviewed.

Osseous choristoma of the conjunctiva simulating extraocular extension of retinoblastoma

PURPOSE

To report the clinicopathologic features of an epibulbar osseous choristoma simulating extraocular extension of retinoblastoma.

DESIGN

Interventional case report.

METHODS

A 7-month-old male presented with a unilateral intraocular mass localized to the temporal retina and a white pedunculated lesion extending from the conjunctiva, anterior to the insertion of the lateral rectus muscle. Clinical examination and computed tomography scan findings led to the diagnosis of retinoblastoma with extraocular extension. The child underwent excision of the epibulbar lesion and enucleation of the globe.

RESULTS

The histopathologic examination of the epibulbar lesion revealed an osseous choristoma. The intraocular contents displayed features typical of retinoblastoma without extraocular extension.

CONCLUSION

An epibulbar osseous choristoma can simulate extraocular extension of retinoblastoma in an eye harboring the intraocular malignancy.