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Biomedical subjects

M Radnót

Publications and source records attributed to M Radnót.

At least 19 recordsLinked to original sources
PubMed1979

Vessels of intraocular malignant melanomas.

The vessel walls of six malignant choroidal melanomas were thin; only thin basal membranes and narrow endothelial linings could be observed with the electron microscope. The endothelium was even absent in some places. Tumor cells were released into the bloodstream through disruptions of the vessel walls in the epithelioid and spindle cell B type tumors.

Adult↗
PubMed1978

Contribution on the ultrastructure of intraocular melanoblastomas.

The nucleoli and intercellular spaces were studied in 10 cases of intraocular melanoblastoma. The sizes of the nucleoli vary from 1.5-2.0 micrometer. The various nucleolar types seen in other tumours were also observed in melanoblastoma. The width of the intercellular spaces varied from 230 to 1,300 A. In the gaps ruthenium red-positive material was shown. In some of the cases this material exhibits a peculiar regular structure, the fundamental units of which are built up of filaments of the same size as found in the intercellular material of other places, however, more or less electron-dense periods alternate.

Adult↗
PubMed1977

[Elements of photoreceptors in retinoblastomas (author's transl)].

In 3 cases of 29 retinoblastomas (roughly 10%) structures similar to processes of photoreceptors were found. In each of them so-called fleurette cells were seen. In one case, described in detail, many lamellar structures appeared corresponding to the outer segment of the photoreceptor.

Eye Neoplasms↗
PubMed1977

Metastatic epibulbar carcinoma.

Epibulbar tumour developed in the left eye of a 53-year-old woman. Light and electron microscopic study of the tumour revealed undifferentiated metastatic carcinoma. The patient underwent surgical intervention because of mammary carcinoma 5 years before the development of the epibulbar tumour.

Breast Neoplasms↗