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Retinoblastoma — Clinical Guidelines

Overview

Retinoblastoma is the most common intraocular malignancy in children, arising from mutations in the RB1 gene affecting retinal cell proliferation 1 5.

Diagnosis

Clinical Presentation: Leukocoria, strabismus, and visual impairment 3 12.

Diagnostic Tests:

- Imaging: Ultrasound, MRI, and CT scans for tumor extension and staging 1. - Fine Needle Aspiration Biopsy (FNAB): Useful for confirming diagnosis in selected cases 18. - Genetic Testing: Essential for identifying hereditary forms 21.

Referral Accuracy: Referring physicians often misdiagnose retinoblastoma; tertiary centers are crucial for accurate diagnosis 12.

Management

First-Line Treatments:

- Intra-arterial Chemotherapy (IAC): Primary treatment option using melphalan, carboplatin, and topotecan 2. - Enucleation: For advanced or unresectable tumors 1 13. - Light Coagulation and Radiotherapy: Conservative treatments for smaller tumors 36 37.

Adjunctive Treatments:

- Chemotherapy: Systemic agents like vincristine, carboplatin, and etoposide in combination with IAC 2. - Interstitial Brachytherapy: Requires sedation; S(+)-ketamine for prolonged procedures 15.

Special Populations

Pediatrics: Early diagnosis and multidisciplinary care are critical 3 12.

Developing Countries: Delayed presentation and advanced disease stages are common due to lack of awareness 20.

Key Recommendations

Immediate Referral to Tertiary Centers: Essential for accurate diagnosis and management of retinoblastoma 12 (Evidence: Strong).

Utilize Imaging Techniques: Regular use of ultrasound, MRI, and CT for staging and monitoring tumor progression 1 (Evidence: Strong).

Consider Genetic Testing: Crucial for identifying hereditary forms and guiding family screening 21 (Evidence: Moderate).

Intra-arterial Chemotherapy as Primary Treatment: Recommended for localized delivery of chemotherapeutic agents 2 (Evidence: Moderate).

Conservative Treatments for Early-Stage Tumors: Light coagulation and radiotherapy can be effective in preserving vision 36 37 (Evidence: Moderate).

References

1 Cardoen L, Sirin S, Galluzzi P, de Jong MC, Koob M, Göricke S et al.. Practical guidelines on imaging of retinoblastoma: a 2025 update on behalf of the European Retinoblastoma Imaging Collaboration and the European Retinoblastoma Group. European radiology 2026. link 2 Bhatter P, Parthasarathy R, Gupta V, Dusa SR, Aggarwal U, Das S et al.. Do's and Don'ts" for intraarterial chemotherapy for retinoblastoma- What ophthalmologist and interventional radiologist need to know?. Indian journal of ophthalmology 2025. link 3 Meel R, Kulkarni S, Singh L, Chinnaswamy G, Radhakrishnan V, Madan R et al.. Management of Intraocular Retinoblastoma: ICMR Consensus Guidelines. Indian journal of pediatrics 2024. link 4 Huemmer SE, Patnaik JL, Ybarra S, Congdon N, Cherwek DH, Wilson MW. Teleophthalmology Through Online Mentorship Over a 20-Year Period: Education and Capacity Building. JCO global oncology 2024. link 5 Marković L, Bukovac A, Varošanec AM, Šlaus N, Pećina-Šlaus N. Genetics in ophthalmology: molecular blueprints of retinoblastoma. Human genomics 2023. link 6 Surukrattanaskul S, Keyurapan B, Wangtiraumnuay N. Correlation between clinical presentations, radiological findings and high risk histopathological features of primary enucleated eyes with advanced retinoblastoma at Queen Sirikit National Institute of Child Health: 5 years result. PloS one 2022. link 7 Griffith JF, Sun M. Assessment of scheduling for patients referred for an abnormal red reflex. Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus 2022. link 8 Das A, Ranjan R, Shah PK. Coexistent Retinoblastoma and Retinopathy of Prematurity in a Preterm Infant. Ophthalmic surgery, lasers & imaging retina 2020. link 9 To LK, Shah PR, Scanga HL, Franks AL, Cladis FP, Nischal KK. Personalized pediatric ophthalmology: a case report. Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus 2019. link 10 . Cone precursor cells are the cell-of-origin in retinoblastoma. Cancer discovery 2014. link 11 Khetan V, Sudrik S, Singh S, Gopal L, Krishnakumar S. Diffuse anterior retinoblastoma with undetectable retinal involvement. Journal of pediatric ophthalmology and strabismus 2011. link 12 Maki JL, Marr BP, Abramson DH. Diagnosis of retinoblastoma: how good are referring physicians?. Ophthalmic genetics 2009. link 13 Mukhopadhyay S, Ghosh S, Chattopadhyay D, Dutta SK. An observational study on retinoblastoma cases attending a medical college in Calcutta. Journal of the Indian Medical Association 2006. link 14 Knudson A. Retinoblastoma: teacher of cancer biology and medicine. PLoS medicine 2005. link 15 Kozek-Langenecker SA, Marhofer P, Sator-Katzenschlager SM, Dieckmann K. S(+)-ketamine for long-term sedation in a child with retinoblastoma undergoing interstitial brachytherapy. Paediatric anaesthesia 2005. link 16 Dondey JC, Staffieri S, McKenzie J, Davie G, Elder J. Retinoblastoma in Victoria, 1976-2000: changing management trends and outcomes. Clinical & experimental ophthalmology 2004. link 17 Kivela T, Polkunen ML. Pieter Pauw's tumor oculorum: reappraisal of the presumed first description of retinoblastoma in 1597. Archives of ophthalmology (Chicago, Ill. : 1960) 2003. link 18 Karcioglu ZA. Fine needle aspiration biopsy (FNAB) for retinoblastoma. Retina (Philadelphia, Pa.) 2002. link 19 Millar GT. James Wardrop (1782-1869): from Whitburn to Windsor Castle. Journal of the Royal College of Surgeons of Edinburgh 2001. link 20 Chantada G, Fandiño A, Manzitti J, Urrutia L, Schvartzman E. Late diagnosis of retinoblastoma in a developing country. Archives of disease in childhood 1999. link 21 Smith BJ, O'Brien JM. The genetics of retinoblastoma and current diagnostic testing. Journal of pediatric ophthalmology and strabismus 1996. link 22 Shields JA. Misconceptions and techniques in the management of retinoblastoma. The 1992 Paul Henkind Memorial Lecture. Retina (Philadelphia, Pa.) 1992. link 23 Rodrigues MM, Bardenstein DS, Donoso LA, Rajagopalan S, Brownstein S. An immunohistopathologic study of trilateral retinoblastoma. American journal of ophthalmology 1987. link74393-4) 24 Leung RJ, Rao NA. Lactate dehydrogenase in retinoblastoma: an immunohistochemical study of twelve eyes. Japanese journal of ophthalmology 1986. link 25 Donoso LA, Hamm H, Dietzschold B, Augsburger JJ, Shields JA, Arbizo V. Rhodopsin and retinoblastoma. A monoclonal antibody histopathologic study. Archives of ophthalmology (Chicago, Ill. : 1960) 1986. link 26 Tsokos M, Kyritsis AP, Chader GJ, Triche TJ. Differentiation of human retinoblastoma in vitro into cell types with characteristics observed in embryonal or mature retina. The American journal of pathology 1986. link 27 Kivelä T, Tarkkanen A, Virtanen I. Intermediate filaments in the human retina and retinoblastoma. An immunohistochemical study of vimentin, glial fibrillary acidic protein, and neurofilaments. Investigative ophthalmology & visual science 1986. link 28 Rodrigues MM, Wilson ME, Wiggert B, Krishna G, Chader GJ. Retinoblastoma. A clinical, immunohistochemical, and electron microscopic case report. Ophthalmology 1986. link33630-3) 29 Casson AG, Maroun FB, Arnold AM, Newman CE. Retinoblastoma, eosinophilic granuloma, and malignant melanoma: a case report. Medical and pediatric oncology 1984. link 30 Dudgeon J, Lee WR. The trilateral retinoblastoma syndrome. Transactions of the ophthalmological societies of the United Kingdom 1983. link 31 de Grouchy J. Toward clinical microcytogenetics: the aniridia and the retinoblastoma stories. Progress in clinical and biological research 1982. link 32 Harry J, Morgan G. Pathology of a unique type of teratoid medulloepithelioma. The British journal of ophthalmology 1979. link 33 François J. Neonatal or juvenile leucocoria. Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde 1979. link 34 Weichselbaum RR, Zakov ZN, Albert DM, Friedman AH, Nove J, Little JB. New findings in the chromosome 13 long-arm deletion syndrome and retinoblastoma. Ophthalmology 1979. link35429-x) 35 Nadol JB. Pseudocellulitis of the orbit. The Annals of otology, rhinology, and laryngology 1977. link 36 François J. Conservative treatment of retinoblastoma. Modern problems in ophthalmology 1977. link 37 Rosengren B, Tengroth B. Retinoblastoma treated with a 60CO applicator. Acta radiologica: therapy, physics, biology 1977. link 38 Kaneko A, Shigeyama S, Uchida R. A new ultrasonic apparatus for ophthalmology using manuel compound scanning. Documenta ophthalmologica. Advances in ophthalmology 1977. link 39 Migdal C. Retinoblastoma occurring in four successive generations. The British journal of ophthalmology 1976. link

Retinoblastoma