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Published on: June 23, 2014
Paragangliomas. Static cytometric studies of nuclear DNA patterns
R González-Cámpora1, S Diaz Cano, E Lerma-Puertas
1Department of Pathology, Hospital Universitario Virgen Macarena, University of Seville, Spain.
Cancer
|February 1, 1993
Summary
Paraganglioma location, not DNA content, helps predict tumor behavior. Nuclear area and DNA content variability correlate with location but not malignancy in these rare tumors.
Area of Science:
- Oncology
- Pathology
- Genetics
Background:
- Histologic appearance of paragangliomas does not predict biologic behavior.
- Cytometric studies suggest a link between aggressive behavior and DNA nuclear content abnormalities (aneuploidy).
Purpose of the Study:
- To investigate morphometric and DNA densitometric features of paragangliomas.
- To determine the correlation of these features with tumor location and prognosis.
Main Methods:
- Analyzed 23 paraganglioma cases using slide cytophotometry (microTICAS system).
- Assessed nuclear area, nuclear form factor, integral optical density, and DNA ploidy.
- Used Mann-Whitney test and Fisher discriminant linear function to compare groups.
Main Results:
- Non-cervical paragangliomas showed higher mean ploidy, nuclear area, and DNA content variability compared to cervical tumors.
- Nuclear area and DNA content variability were correlated with tumor location.
- No significant differences were found between malignant and benign paragangliomas for the studied variables.
Conclusions:
- Karyometric and DNA densitometric parameters have limited prognostic value for paragangliomas.
- Tumoral location is a more reliable indicator for predicting paraganglioma prognosis.
