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. 2022 Jun 27;11(13):3689.
doi: 10.3390/jcm11133689.

Gynecological Cancers in Lynch Syndrome: A Comparison of the Histological Features with Sporadic Cases of the General Population

Valentina Elisabetta Bounous  1 , Elisabetta Robba  1 , Stefania Perotto  2 , Barbara Pasini  3 , Nicoletta Tomasi Cont  4 , Maria Teresa Ricci  5 , Antonino Ditto  6 , Marco Vitellaro  5 , Francesco Raspagliesi  6 , Nicoletta Biglia  1
Affiliations

Gynecological Cancers in Lynch Syndrome: A Comparison of the Histological Features with Sporadic Cases of the General Population

Valentina Elisabetta Bounous et al. J Clin Med. .

Abstract

Introduction: About 5% of endometrial cancers (ECs) are attributed to an inherited predisposition, for which Lynch syndrome (LS) accounts for the majority of cases. Women with LS have a 40−60% predicted lifetime risk of developing EC, in addition to a 40−80% lifetime risk of developing colorectal cancer and other cancers. In this population, the lifetime risk of developing ovarian cancer (OC) is 10−12%. Object: to compare the histopathological features of LS-associated EC and OC with sporadic cancers in order to evaluate whether there are differences in terms of age at diagnosis, site of occurrence in the uterus, histological type, stage at diagnosis, and tumor grading. Materials and methods: we compared data obtained from 96 patients with LS-associated gynecological cancers (82 with EC and 14 with OC) to a control group (CG) of 209 patients who developed sporadic EC, and a CG of 187 patients with sporadic OC. Results: The mean age at diagnosis of LS-associated EC and OC was much lower than in the control groups. In both groups with EC, the endometrioid histotype was the most frequently occurring histotype. However, among LS women there was a significantly higher incidence of clear cell tumors (11% versus 2.4% in the CG, p = 0.0001). Similar to the sporadic cancer cases, most of the LS-associated ECs presented at an early stage (89% of cases at FIGO I-II stage). In the LS group, the tumor frequently involved only the inner half of the endometrium (77% of cases, p < 0.01). In the LS group, 7.3% of ECs were localized to the lower uterine segment (LUS), whereas no cancer developed in the LUS in the CG. No serous OCs were diagnosed in the LS group (versus 45.5% in the CG, p = 0.0009). Most of the LS-associated OCs presented at an early stage (85% of cases at FIGO I-II stages, p < 0.01). Conclusion: LS-associated EC and OC seem to have peculiar features, occurring at a younger age and at an earlier stage. In LS, EC less frequently involves the outer half of the endometrium, with a more frequent occurrence in the LUS. The presence of clear cell EC was more frequently observed, whereas in OC, the predominant histotype was endometrioid.

Keywords: Lynch syndrome; endometrial cancer; mismatch repair genes; ovarian cancer.

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Conflict of interest statement

All authors have no conflict of interest to report.

References

    1. Aaltonen L.A., Salovaara R., Kristo P., Canzian F., Hemminki A., Peltomäki P., Chadwick R.B., Kääriäinen H., Eskelinen M., Järvinen H., et al. Incidence of hereditary non polyposis colorectal cancer and the feasibility of molecular screening for the disease. N. Engl. J. Med. 1998;338:1481–1487. doi: 10.1056/NEJM199805213382101. - DOI - PubMed
    1. Aarnio M., Sankila R., Pukkala E., Salovaara R., Aaltonen L.A., de la Chapelle A., Peltomäki P., Mecklin J.P., Järvinen H.J. Cancer risk in mutation carriers of DNA-mismatch-repair genes. Int. J. Cancer. 1999;81:214–218. doi: 10.1002/(SICI)1097-0215(19990412)81:2<214::AID-IJC8>3.0.CO;2-L. - DOI - PubMed
    1. Lynch H.T., Smyrk T.C., Watson P., Lanspa S.J., Lynch J.F., Lynch P.M., Cavalieri R.J., Boland C.R. Genetics, natural history, tumor spectrum, and pathology of hereditary nonpolyposis colorectal cancer: An updated review. Gastroenterology. 1993;104:1535–1549. doi: 10.1016/0016-5085(93)90368-M. - DOI - PubMed
    1. Sinicrope F.A. Lynch Syndrome-Associated Colorectal Cancer. N. Engl. J. Med. 2018;379:764–773. doi: 10.1056/NEJMcp1714533. - DOI - PubMed
    1. Watson P., Vasen H.F.A., Mecklin J., Bernstein I., Aarnio M., Järvinen H.J., Myrhøj T., Sunde L., Wijnen J.T., Lynch H.T. The risk of extra-colonic, extra-endometrial cancer in the Lynch syndrome. Int. J. Cancer. 2008;123:444–449. doi: 10.1002/ijc.23508. - DOI - PMC - PubMed

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