Clinical Features and Long-term Prognosis of Retinoblastoma according to Age at Diagnosis
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Purpose: We aimed to study the clinical characteristics and long-term prognoses of retinoblastoma according to the age at diagnosis. Methods: A retrospective chart review of non-screened patients newly diagnosed with retinoblastoma between January 2007 and February 2018. Results: Among the 20 patients analyzed, 11 were diagnosed at an age younger than 1 year (group 1) and nine at 1 year or older (group 2). The mean lag times until diagnosis were 1.0 ± 0.4 and 5.0 ± 2.1 months for groups 1 and 2, respectively (p = 0.056). The mean follow-up durations were 49.4 ± 12.7 and 58.3 ± 8.8 months, respectively (p = 0.412). Group 1 had a significantly higher proportion of bilateral retinoblastoma than did group 2 (72.7% vs. 11.1%, p = 0.010). Four of five patients (80.0%) with germline RB1 mutations were diagnosed with retinoblastoma at age 3 months or younger. The eyes of patients in group 2 had significantly higher International Intraocular Retinoblastoma Classification stages than did those of patients in group 1 (p for trend = 0.010). The proportion of eyes with optic nerve invasion and those that had undergone enucleation were significantly higher in group 2 (p = 0.033 and 0.046, respectively). Survival did not differ according to the age at diagnosis. Conclusions: Early onset retinoblastoma does not seem to indicate poor ocular or survival prognosis in Korean children with retinoblastoma.
Abstract
Purpose: We aimed to study the clinical characteristics and long-term prognoses of retinoblastoma according to the age at diagnosis. Methods: A retrospective chart review of non-screened patients newly diagnosed with retinoblastoma between January 2007 and February 2018. Results: Among the 20 patients analyzed, 11 were diagnosed at an age younger than 1 year (group 1) and nine at 1 year or older (group 2). The mean lag times until diagnosis were 1.0 ± 0.4 and 5.0 ± 2.1 months for groups 1 and 2, respectively (p = 0.056). The mean follow-up durations were 49.4 ± 12.7 and 58.3 ± 8.8 months, respectively (p = 0.412). Group 1 had a significantly higher proportion of bilateral retinoblastoma than did group 2 (72.7% vs. 11.1%, p = 0.010). Four of five patients (80.0%) with germline RB1 mutations were diagnosed with retinoblastoma at age 3 months or younger. The eyes of patients in group 2 had significantly higher International Intraocular Retinoblastoma Classification stages than did those of patients in group 1 (p for trend = 0.010). The proportion of eyes with optic nerve invasion and those that had undergone enucleation were significantly higher in group 2 (p = 0.033 and 0.046, respectively). Survival did not differ according to the age at diagnosis. Conclusions: Early onset retinoblastoma does not seem to indicate poor ocular or survival prognosis in Korean children with retinoblastoma.
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