Abstract
We retrospectively evaluated the clinical characteristics of a rare clinical condition of International Federation of Gynecology and Obstetrics (FIGO) stage III and IV squamous cell carcinomas arising from mature cystic teratoma of the ovary between October 1999 and September 2010 at member institutions of the Tohoku Gynecologic Cancer Unit. A total of nine cases (eight FIGO stage III and one FIGO stage IV) were included in this survey. The patients’ median age was 56 years (range 46–74 years), and the median tumor diameter was 140 mm (range 95–250 mm). Five of eight patients were positive for cancer antigen (CA)-125, six of eight were positive for CA19-9, four of seven were positive for the carcinoembryonic antigen, and eight of nine were positive for squamous cell carcinoma antigen. Eight patients received postoperative therapy (five underwent chemotherapy, two underwent concurrent chemoradiotherapy, and one underwent radiation therapy alone). Two patients who received complete surgery and concurrent chemo radiotherapy achieved disease-free survival. The median overall survival was 8.9 months. Univariate analysis showed that both the patients’ age (<50 years or ≥50 years) and maximum diameter of the residual tumor (<1 cm or ≥1 cm and none or persistent) did not predict the patients’ prognosis. These results suggest that complete surgery should be performed because disease-free survival was observed only in patients with no residual tumor, similar to the previous findings of large number retrospective study.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparative ethical standards. For this type of study formal consent in not required.
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Tokunaga, H., Watanabe, Y., Kaiho, M. et al. Advanced squamous cell carcinomas arising from mature cystic teratoma of the ovary: a retrospective case series at the Tohoku Gynecologic Cancer Unit. Int Canc Conf J 5, 146–149 (2016). https://doi.org/10.1007/s13691-016-0246-x
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DOI: https://doi.org/10.1007/s13691-016-0246-x