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Two Cases of Low-Grade Endometriod Carcinoma Associated with Undifferentiated Carcinoma of the Uterus (Dedifferentiated Carcinoma): A Molecular Study

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Pathology & Oncology Research

Abstract

Dedifferentiated carcinoma (DC) is an uterine neoplasm containing both low-grade endometrioid carcinoma (LGEC) and undifferentiated carcinoma (UC). DC is an aggressive tumour even when the UC component represents only 20% of the entire neoplasm. In this paper, two cases DCs at different stages of development, in 61- and 83-year-old women respectively were reported. In addition, in these uterine malignancies microsatellite instability (MSI) and loss of heterozygosity (LOH) were investigated in order to explain its aggressive behavior, in both components. Case #1 presented metastases at diagnosis, while case #2 was at a lower stage. LGEC component was invasive in case #1 and intramucous in case #2. In both cases, UC components were characterized by a high degree of instability, in accordance of its aggressive behaviour and its architectural heterogeneity. Further studies with more numerous cases are mandatory to confirm these data.

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Acknowledgements

The Authors wish to thank Professor Alex Gillan for the correction of the English language and Mrs Emilia Corradini for technical assistance.

Part of this paper was presented as a poster, during the SIAPEC-IAP Congress 7–9th September 2009 in Florence, Italy.

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Correspondence to Giovanna Giordano.

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Giordano, G., D’Adda, T., Bottarelli, L. et al. Two Cases of Low-Grade Endometriod Carcinoma Associated with Undifferentiated Carcinoma of the Uterus (Dedifferentiated Carcinoma): A Molecular Study. Pathol. Oncol. Res. 18, 523–528 (2012). https://doi.org/10.1007/s12253-011-9386-7

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  • DOI: https://doi.org/10.1007/s12253-011-9386-7

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