A Case of Retinoblastoma and Coats' Disease in the Same eye: A Clinicopathologic Report

ABSTRACT

A case of retinoblastoma and Coats' disease in the same eye is presented. Coexisitence of the retinoblastoma and Coats' disease is very rarely seen, though the retinoblastoma or the Coats' disease are not uncommon diseases. After the enucleatIon under the clinical diagnosis of retinoblastoma, the careful histopathological study disclosed the unusual findings of a typical Coats' disease containing predominent telangiectasis adjacent to the undifferentiated retinoblastoma cell mass. Differentiation of Coats' disease to the so-called Coats' reaction associated with a certain retinal disorders is emphasized on the histological view point.