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Pediatr Blood Cancer. 2009 Mar;52(3):351-6. doi: 10.1002/pbc.21845.

Predictive factors of invasion in eyes with retinoblastoma enucleated after eye salvage treatments.

Author information

1
Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.

Abstract

BACKGROUND:

The impact of chemotherapy, focal therapies, radiation and co-existing ocular morbidities on histology of eyes with retinoblastoma enucleated following chemoreduction is not well known.

PROCEDURE:

Twenty-five eyes (23 patients) with retinoblastoma enucleated after failing eye-salvage therapy were evaluated. Reasons for enucleation (tumor progression, subretinal or vitreous seeds) and co-morbid conditions (neovascular glaucoma, cataract, vitreous hemorrhage and retinal detachment) were documented. All specimens were reviewed for evidence of ciliary body, choroidal, optic nerve, and scleral invasion.

RESULTS:

The median age at diagnosis was 14 months (range, 1-37 months). Twenty eyes were classified as Reese-Ellsworth Group IV-V at diagnosis. Twenty-four eyes had recurrent disease at enucleation; one eye was enucleated for neovascular glaucoma and vitreous hemorrhage. Co-existing ocular morbidities at enucleation included vitreous hemorrhage (n = 6), retinal detachment (n = 9), neovascular glaucoma (n = 9) and cataracts (n = 3). Histologic findings included choroidal invasion (n = 7), ciliary body invasion (n = 4), optic nerve invasion (n = 6) and scleral invasion (n = 3). The median time from diagnosis to enucleation was 11 months. Co-existing retinal detachment and vitreous hemorrhage significantly increased the likelihood of optic nerve invasion (P = 0.014 and P = 0.011, respectively). Prolonged time to enucleation was significantly associated with the likelihood of choroidal (P = 0.010) and ciliary body (P = 0.021) invasion as well as invasion of multiple sites.

CONCLUSION:

In eyes with retinoblastoma enucleated after chemoreduction, co-existing ocular morbidities and time to enucleation are predictive of extra-retinal extension.

PMID:
19021223
PMCID:
PMC4643656
DOI:
10.1002/pbc.21845
[Indexed for MEDLINE]
Free PMC Article

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