Results 121 to 130 of about 1,061 (169)

Immunohistochemistry of Medulloepithelioma and Neural Tube

Pediatric Pathology & Laboratory Medicine: Journal of the Society for Pediatric Pathology, Affiliated With the International Paediatric Pathology Association, 1997
Immunohistochemistry profiles of medulloepithelioma (from two 2 1/2-year-old girls who had cerebral medulloepitheliomas and a 35-week postconceptional female infant with congenital posterior fossa tumor) and neural tube are compared. Microscopically, the tumors contained a medulloepitheliomatous component, manifested as tubular epithelial structures ...
Maliheh Khoddami, Laurence E Becker
exaly   +3 more sources

Medulloepithelioma of the ciliary body

Acta Ophthalmologica, 1991
Abstract Neuroepithelial tumors of the ciliary body occur more seldom than retinoblastoma. The congenital form is called medulloepithelioma, the adult‐acquired adenoma or adenocarcinoma. Medulloepitheliomas consist of organoid epithelial structures developing anteriorly along surfaces such as the iris.
N, Hausmann, F H, Stefani
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Teratoid Intraocular Medulloepithelioma

American Journal of Ophthalmology, 1978
The right eye of a 1-year-old black infant with a painful blind eye was studied histologically. It contained a tumor at an advanced stage of growth. The tumor consisted of moderately large, round, and elongated undifferentiated cells and anaplastic cells with mitotic figures combined with multilayered, poorly differentiated epithelial cells that ...
L, Yanko, A, Behar
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Echographic features of medulloepithelioma

American Journal of Ophthalmology, 2000
To evaluate the echographic features of medulloepithelioma that may assist in establishing the diagnosis.Retrospective review identified four eyes with medulloepithelioma studied with echography. Clinical records, echographic findings, histopathologic tumor features, and the clinical course were reviewed.The initial preoperative diagnosis of ...
R E, Foster, T G, Murray, S F, Byrne, J R, Hughes, B K, Gendron, F J, Ehlies, D H, Nicholson   +6 more
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Fine Structure of Medulloepithelioma

Journal of Neuropathology & Experimental Neurology, 1977
A survey of published cases of medulloepitheliomas indicates that this tumor is highly malignant (average course 6 months), occurs in early childhood (average age 4,4 years) and has no sex predilection. Although it may originate in any part of the central nervous system, it is most common in the cerebral hemispheres.
A, Pollak, R L, Friede
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Sellar and suprasellar medulloepithelioma

Pediatric Radiology, 2001
Medulloepithelioma is a rare tumour with a very poor prognosis. The most frequent site in the central nervous system is the cerebral hemispheres. Appearances on MRI are very variable, possibly reflecting the divergent forms of differentiation seen at histological examination.
L M, Pang, D J, Roebuck, H K, Ng, Y L, Chan   +3 more
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Medulloepithelioma: MRI Appearances

Australasian Radiology, 1988
ABSTRACTThe M.R.I. appearances of a rare tumour of childhood are presented. The clinical presentation and imaging appearances of medulloepithelioma are discussed. The importance of both C.T. and M.R.I. in the pre‐operative evaluation of this tumour is outlined.
R P, Davies, C S, Lee
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Medulloepithelioma of the Optic Nerve Head

Archives of Ophthalmology, 1997
Medulloepithelioma of the optic nerve is a rare developmental tumor. We describe a 2-year-old boy with profound loss of vision associated with a visible tumor of the optic nerve head in his left eye. A clinically diagnosed retinoblastoma necessitated left eye enucleation.
M, O'Keefe, T, Fulcher, P, Kelly, W, Lee, J, Dudgeon   +4 more
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Cerebral Medulloepithelioma

Pediatric Neurosurgery, 1979
A cerebral medulloepithelioma, a rare embryonal multipotential central neuroepithelial neoplasm of childhood, is described, bringing to 16 the total number of cases reported in the literature. It is the first example recorded to date which displayed the entire range of differentiation from embryonal to mature cells, of both glial and neuronal lineage ...
B.W. Scheithauer, L.J. Rubinstein
openaire   +1 more source

Electron Microscopic Diagnosis of Medulloepithelioma

American Journal of Ophthalmology, 1975
A 20-month-old boy with a ciliary body tumor presented with two white flocculi floating in the anterior chamber of his left eye. This material was examined by electron microscopy. Both the clinical appearance of the tumor and the ultrastructural findings suggested the diagnosis of medulloepithelioma.
F A, Jakobiec, G M, Howard, R M, Ellsworth, M, Rosen   +3 more
openaire   +2 more sources