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Diamniotic, dichorionic, male in vitro fertilisation (IVF) twins were born at 26+6 weeks. Retinopathy of prematurity screening revealed bilateral posterior pole retinoblastoma in twin A at 34 weeks' gestation. Aggressive chemoreduction therapy regressed the tumours significantly, which await definitive treatment (figure 1). Genetic analyses identified a heterozygous mutation in the RB1 gene in the affected twin that was absent …
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.