Elsevier

Ophthalmology

Volume 114, Issue 1, January 2007, Pages 162-169
Ophthalmology

Original Article
Macular Retinoblastoma: Evaluation of Tumor Control, Local Complications, and Visual Outcomes for Eyes Treated with Chemotherapy and Repetitive Foveal Laser Ablation

Presented at: American Academy of Ophthalmology meeting, October 2005, Chicago, Illinois.
https://doi.org/10.1016/j.ophtha.2006.06.042Get rights and content

Objective

To determine tumor control rates, complication rates, and visual acuity (VA) for patients with macular retinoblastoma undergoing systemic chemotherapy and foveal diode laser ablation.

Design

Noncomparative retrospective case series.

Participants

All patients with retinoblastoma in the macula at the Bascom Palmer Eye Institute between 1991 and 2004 were evaluated. Patients included in the study were managed by the same clinician with a planned therapeutic strategy.

Methods

Patients with Reese–Ellsworth groups I to IV disease underwent 4 to 9 cycles of systemic chemotherapy with vincristine, etoposide, and carboplatin, and patients with group V disease underwent 6 to 10 cycles with or without cyclosporine. All tumors underwent repetitive diode laser ablation (2–24 sessions) applied to the foveal and extrafoveal portions of tumors at each visit until tumors were deemed inactive for at least 6 months.

Main Outcome Measures

Recurrence requiring external beam radiation therapy or enucleation; VA; and complications including iris atrophy, peripheral focal lens opacity, peripheral anterior synechiae, and foveal neovascular membrane.

Results

Forty-four eyes of 33 patients were treated. Eyes were classified as Reese–Ellsworth group I (1 [2%]), II (6 [12%]), III (3 [7%]), IV (5 [9%]), or V (29 [67%]). Thirty-eight eyes (86%) had successful tumor control and avoided enucleation at a median follow-up of 36 months. At 3 years, tumor control rates were 100% for Reese–Ellsworth groups I to IV and 83% for group V. All eyes requiring enucleation were in Reese–Ellsworth group V. No eyes required external beam radiation. The most common complications were iris atrophy (61%) and focal lens opacity (14%). Strabismus was noted in 16% of eyes. Snellen VA measured 20/40 or better in 36% of eyes, 20/80 or better in 57%, and 20/400 or better in 86%. An increasing number of laser applications and chemotherapy cycles was not associated with decreased VA, strabismus, or development of an afferent pupillary defect but was associated with development of local complications.

Conclusions

A unique approach to the application of diode laser therapy characterized by repetitive foveal treatments and aggressive chemotherapy resulted in tumor control rates that exceed those previously published. Furthermore, despite laser application directly to the fovea, 57% of patients retained 20/80 or better vision.

Section snippets

Materials and Methods

All patients with retinoblastoma located in the macula treated at the Ocular Oncology Service, Bascom Palmer Eye Institute between May 1991 and April 2004 were reviewed retrospectively. For the purposes of this study, the macula was defined as the area within the vascular arcades. Only patients who were treated initially with chemotherapy and diode laser ablation therapy were included in this review. Exclusion criteria for treatment with chemotherapy included tumor invasion into the optic nerve

Results

Clinical characteristics of the patients in this study are detailed in Table 1. Eyes were classified as Reese–Ellsworth group I (1 [2%]), II (6 [12%]), III (3 [7%]), IV (5 [9%]), or V (29 [67%]). Tumors underwent a median of 9 sessions of laser applications (range, 2–24). Overall, 38 eyes (86%) had successful tumor control and avoided enucleation at a median follow-up of 36 months (range, 3–100). All 15 eyes (100%) in Reese–Ellsworth groups I to IV had successful tumor control at 3 years (95%

Discussion

In this study, we evaluated one consistent therapeutic strategy utilized at a major ocular oncology center. All of the patients in this sample with Reese–Ellsworth groups I to IV disease had their eyes successfully salvaged with this treatment approach alone, avoiding external beam radiation and enucleation (Table 4). This approach resulted in a remarkably high globe salvage rate, comparable to or better than those in recent large studies by Shields et al,30 Rodriguez-Galindo et al,25 and

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    Manuscript no. 2005-942.

    The authors report no financial interests in any of the products mentioned in the article.

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