INTRAOCULAR MALIGNANT TERATOID MEDULLOEPITHELIOMA

Malignant teratoid medulloepithelioma in eye.

Malignant teratoid medulloepithelioma is an extremely rare tumor occurring in children younger than 5 years of age, arising from ciliary body epithelium or iris but few arise from optic nerve and retina. This report concerns a 5 years old boy who presented with pain, redness and protrusion of right eye. Histopathologically, the tumor was composed of epithelial and sarcomatoid component. The pse...

Pathology of a unique type of teratoid medulloepithelioma.

A unique teratoid medulloepithelioma showing a conspicuous vascular component with orbital involvement is described.

Diffuse retinal involvement in malignant nonteratoid medulloepithelioma of ciliary body in an adult.

Intraocular medulloepithelioma is a rare embryonal neoplasm that occurs predominantly in children and arises from the primitive medullary epithelium of the optic cup. Medulloepitheliomas that contain heterotopic elements or tissues such as brain, cartilage, or rhabdomyoblasts are classified as teratoid, and tumors lacking these elements are classified as nonteratoid medulloepitheliomas. Both no...

On the Classification and Grading of Medulloepithelioma of the Eye

Medulloepithelioma is a rare congenital tumor of the ciliary body and iris. The current classification and grading of medulloepithelioma shows inconsistencies and does not reflect clinical behavior. This position paper discusses the backgrounds of the current classification and intends to initiate a discussion on an alternative classification and grading scheme. © 2016 The Author(s) Published b...

Malignant teratoid tumour of the lung: ? malignant hamartoma.