Multiple malignant tumors of the orbit

Area of Science:

• Ophthalmology and Oncology
• Pediatric Malignancies
• Rare Disease Research

Background:

• Retinoblastoma is the most common intraocular malignancy in children, affecting approximately 1 in 15,000-20,000 newborns.
• It arises from retinal neuroblasts and can present as unifocal or multifocal tumors, affecting one or both eyes.
• Two primary types exist: hereditary (approx. 40% of cases) and sporadic (non-hereditary).

Observation:

• Presents two familial cases of retinoblastoma: a 4-year-old child with bilateral retinoblastoma and orbital invasion, and her 30-year-old mother with a recurrent intra-orbital tumor.
• The child underwent enucleation of the right eye and exenteration of the left orbit.
• The mother experienced a tumor recurrence 29 years after initial enucleation for retinoblastoma; the recurrence was histopathologically diagnosed as squamous cell carcinoma.

Findings:

• Highlights the hereditary link in retinoblastoma, as observed in the mother-daughter cases.
• Documents a rare instance of late-onset squamous cell carcinoma recurrence in the same orbital region years after retinoblastoma treatment.
• Emphasizes the importance of long-term follow-up and genetic counseling for families with retinoblastoma.

Implications:

• Underscores the critical role of genetic counseling in managing hereditary retinoblastoma and assessing familial risk.
• Suggests the potential for secondary malignancies or late recurrences in the orbital region following retinoblastoma treatment.
• Reinforces the need for continued research into the long-term outcomes and potential secondary risks associated with retinoblastoma.