title: Occurrence of sequential intraocular tumors: malignant medulloepithelioma subsequent to retinoblastoma.
abstract: A 13-year-old boy, whose bilateral retinoblastoma had been treated by enucleation (OD) and irradiation (OS), developed anterior staphyloma (OS) necessitating the second enucleation. Histopathological, immunohistochemical and electron microscopic studies revealed malignant teratoid medulloepithelioma of the ciliary body, with demonstrated multipotential histogenesis. This is the first report which demonstrates the development of a second malignant intraocular tumor in an eye previously affected by hereditary retinoblastoma. Careful monitoring of patients who have had hereditary retinoblastoma is necessary because of the potential for a second malignancy.
authors.affiliation: Department of Ophthalmology, Teikyo University Ichihara Hospital, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Minoda
authors.forename: Y
authors.initials: Y
authors.lastname: Hirose
authors.forename: I
authors.initials: I
authors.lastname: Sugano
authors.forename: K
authors.initials: K
authors.lastname: Nagao
authors.forename: K
authors.initials: K
authors.lastname: Kitahara
mesh_terms: D000293:Adolescent; D002924:Ciliary Body / Q000473:pathology*; D005134:Eye Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D018302:Neoplasms, Neuroepithelial / Q000473:pathology*; D016609:Neoplasms, Second Primary / Q000473:pathology*; D012175:Retinoblastoma / Q000473:pathology*; D014604:Uveal Neoplasms / Q000473:pathology*