Global Retinoblastoma Presentation and Analysis by National Income Level

Abstract

Retinoblastoma, the most common eye cancer of childhood, is fatal if left untreated. Prognosis of patients with retinoblastoma in high-income countries (HICs) has improved over the past 50 years, now reaching a near 100% disease-free survival rate.^1-3 This is attributed to several factors, including (1) creation of specialized referral centers, (2) decoding of the genetic basis of the disease, (3) formation of screening programs, and (4) the introduction of chemotherapy.⁴ In HICs, retinoblastoma is a curable disease, and attention has now shifted to eye salvage^5,6 and improvement of quality of life.⁷ In low- and middle-income countries (LMICs), where more than 80% of global retinoblastoma cases arise, the prognosis is poor, and it is assumed that this is because of delayed diagnosis and treatment.^8-10 Publications from LMICs are scarce, and many countries do not report their retinoblastoma data.¹¹ The stage of retinoblastoma at the time of diagnosis in low-income, middle-income, and high-income countries has not been surveyed globally. This information is important for policy and health care planning at national and international levels.