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Background  Optical coherence tomography (OCT) has become an invaluable tool in retinoblastoma management, providing submillimeter visualization of tumor control following treatment. Herein, we document OCT-detection of a subtle tumor recurrence, allowing early intervention and achieving foveal microanatomy preservation.    Case presentation  A 3-week-old girl was diagnosed with bilateral familial retinoblastoma, classified as group D in the right eye (OD) and group B in the left eye (OS), and treated with intravenous chemoreduction. At 6-months follow-up, the right eye was under control, but the left eye revealed a subtle juxtafoveal tumor recurrence, documented on handheld OCT (HH-OCT) and measuring 2750 µm in diameter and 792 µm in thickness. Treatment with intraarterial chemotherapy (IAC) using 1 cycle of melphalan 5 mg was performed and complete tumor control was achieved, leaving a flat, concave scar 663 µm from the intact foveola and measuring 2750 µm in diameter and 120 µm in thickness. Foveal microanatomy OS was preserved on HH-OCT. The findings remained stable at 2 years following IAC.    Conclusions  HH-OCT is an important tool in retinoblastoma management. In this case, HH-OCT allowed for early detection of retinoblastoma recurrence, before foveal invasion. Following treatment with IAC, complete tumor regression was noted and foveal microanatomy remained intact.

international journal of retina and vitreous

Parafoveolar retinoblastoma regression with foveal preservation following intra-arterial chemotherapy documented on hand-held optical coherence tomography in a newborn