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Results for “Neuroectodermal Tumors, Primitive, Peripheral”

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PubMed1983

Neuroepithelial tumor of the optic nerve in a horse.

A nine-year-old horse was presented with severe exophthalmos of the right eye and a large mass in the vitreal cavity. The affected globe was enucleated and two months following surgery the horse was euthanized because of spread of the tumor into the calvarium producing compression of the brain stem and neurologic signs. Examination of tumor tissue by light and electron microscopic examination showed a mixed neoplasm of primitive neuroepithelium.

Animals↗
PubMed1978

Olfactory neuroepithelioma in a domestic carp (Cyprinus carpio).

A well-differentiated olfactory neuroepithelioma was found protruding from the left olfactory fossa of a 6-year-old domestic multicolored carp, Cyprinus carpio. Following diagnostic biopsy the neoplasm continued to grow. At necropsy, the tumor was found to extend beyond the olfactory chamber into the intracranial portion of the olfactory bulb, but no distant metastases could be detected. Histologically, the neoplasm had a remarkably organoid appearance, being composed of imperfect reproductions of the normal olfactory organ including olfactory membrane, axonal bundles, and glial tissue. Electron microscopy demonstrated the presence of numerous ciliated olfactory sensory cells as well as sustentacular, mucous, and basal cells within the neoplastic simulations of olfactory membrane. These observations, together with those from two previous case reports of olfactory neuroepitheliomas in teleosts, suggest that this type of tumor tends to be more highly differentiated than are neoplasms of similar origin in mammals.

Animals↗
PubMed1980

[Esthesioneuroblastoma: general review about three new cases (author's transl)].

The authors report three new cases of olfactory esthesioneuromas. They emphasise, both the surgical and radiotherapeutic methods used, and staging according to Kadish. Very localized forms may be treated either by surgery or radiotherapy. Less localized forms require association of surgery and radiotherapy, with a craniofacial combined approach when extension goes beyong the lamina cribosa.

Adolescent↗
PubMed1978

Computed tomography in olfactory neuroblastoma: one case of esthesioneuroepithelioma and four cases of esthesioneuroblastoma.

Five cases of histologically confirmed olfactory neuroblastoma (esthesioneuroblastomas) have been studied by computed tomography (CT). Both the clinical symptoms (in particular, unilateral nasal obstruction and recurring epistaxis) and radiological findings (opacity of the paranasal sinuses) are nonspecific. Computed tomography shows a contrast enhancing mass-lesion and is more useful than conventional tomography in estimating its extension and the associated bone destruction, secondary reaction of sinusitis, and tumoral calcification. In the two cases in which the tumor was associated with exophthalmos, CT demonstrated that the muscular cone acts as a barrier preventing tumoral invasion. In cases wtih intracranial involvement, it appears that the attenuation values can be useful for differentiating between invasion by contiguity (two cases) versus metastasis (one case). Computed tomography is valuable in the follow-up and during and after radiotherapy of the tumor.

Adolescent↗