Differentiation between malignant melanomas and benign melanocytic nevi by computerized DNA cytometry of imprint specimens

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urn:nbn:de:bvb:355-epub-85183 Copy

Stolz, Wilhelm ; Vogt, Thomas ; Landthaler, Michael ; Hempfer, Siegfried ; Bingler, Paul ; Abmayr, Wolfgang

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Date of publication of this fulltext: 05 Aug 2009 13:59

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Details

Item type:	Article
Date:	1994
Institutions:	Medicine > Lehrstuhl für Dermatologie und Venerologie
Identification Number:	Value Type 8188937 PubMed ID 10.1111/j.1600-0560.1994.tb00684.x DOI
Classification:	Notation Type Adult MESH DNA, Neoplasm/analysis MESH Diagnosis, Differential MESH Dysplastic Nevus Syndrome/diagnosis MESH Female MESH Humans MESH Image Processing, Computer-Assisted/methods MESH Male MESH Melanoma/diagnosis MESH Middle Aged MESH Nevus, Pigmented/diagnosis MESH Skin Neoplasms/diagnosis MESH Statistics as Topic MESH
Dewey Decimal Classification:	600 Technology > 610 Medical sciences Medicine
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Unknown
Item ID:	8518

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Abstract

Recently image analysis (IA) and DNA-cytophotometry (CP) have proved to be useful for the differentiation between benign and malignant melanocytic lesions on paraffin sections. Since, on sections, these procedures are very time-consuming, we tested in the present study whether IA of imprint specimens, which can be evaluated in less than 30 minutes, might also be sufficient. In 39 malignant ...

Abstract

Recently image analysis (IA) and DNA-cytophotometry (CP) have proved to be useful for the differentiation between benign and malignant melanocytic lesions on paraffin sections. Since, on sections, these procedures are very time-consuming, we tested in the present study whether IA of imprint specimens, which can be evaluated in less than 30 minutes, might also be sufficient. In 39 malignant melanomas (MM), 18 melanocytic nevi (MN), and 6 dysplastic nevi (DN), 12 different morphometric and DNA cytometric features were determined in 100 randomly selected nuclei. In univariate analysis, 5 features were found to be significantly different between the benign and malignant groups (p < 0.0001): mean value (MAREA) and standard deviation (SAREA) of nuclear area and the 80th, 90th, and 95th percentiles of DNA distribution. Using SAREA, the best univariate feature, 82.5% of the cases could be correctly separated. In multivariate analysis with a combination of three features--standard deviation of nuclear area (SAREA), mean DNA value (MDNA), and 95th percentile of DNA distribution (PERC95)--a correct diagnosis was achieved in 89.5% of the cases. Results obtained in the cases of DN indicated an increased proliferation, but did not allow the separation of DN from MM and MN. Since our technique allows a rapid analysis without loss of tissue, which might be important for histological analysis, and the classification rates are equal or still higher than reported in studies on sections, imprints of melanocytic lesions seem to be most appropriate for the calculation of DNA cytometric features as helpful diagnostic criteria in equivocal melanocytic lesions.

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