Open Access

Synchronous endometrial and ovarian cancer in Lynch syndrome with a MSH2 germline mutation: A case report

  • Authors:
    • Takashi Takeda
    • Kouji Banno
    • Megumi Yanokura
    • Mayuka Anko
    • Arata Kobayashi
    • Asako Sera
    • Takayuki Takahashi
    • Masataka Adachi
    • Yusuke Kobayashi
    • Shigenori Hayashi
    • Hiroyuki Nomura
    • Akira Hirasawa
    • Eiichiro Tominaga
    • Daisuke Aoki
  • View Affiliations

  • Published online on: September 17, 2018     https://doi.org/10.3892/mco.2018.1723
  • Pages: 479-484
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Synchronous endometrial and ovarian cancer (SEOC) is a rare entity among gynecological cancers, which exhibits endometrioid histology in its early stages and generally has a good prognosis. However, diagnosis is difficult and recent reports have demonstrated that most clinically diagnosed cases of SEOC have clonally related cancers, indicating metastatic cancer. The association of SEOC with Lynch syndrome is also not clearly understood. We herein present the case of a 41‑year‑old SEOC patient with MSH2 mutation. The endometrial cancer was an endometrioid adenocarcinoma and the ovarian cancer was mainly endometrioid, but also included a clear cell carcinoma with a borderline clear cell adenofibromatous component, indicating primary ovarian cancer. Both tumors exhibited microsatellite instability (MSI) and loss of expression of MSH2 and MSH6. The patient had a family history of colorectal and gastric cancers. Genetic analysis revealed a germline mutation in exon 6 of MSH2 (c.1042C>T, p.Gln348*) and the patient was diagnosed with Lynch syndrome. This MSH2 mutation has only been registered in one case in the InSiGHT variant databases and has not been reported in a gynecological tumor or SEOC to date. This case is a rare example of a patient with genetically diagnosed Lynch syndrome who also developed SEOC. This synchronous cancer is not common, but it may be caused by Lynch syndrome. Testing for MSI and immunohistochemistry for mismatch repair deficiency is necessary in cases with suspected SEOC.
View Figures
View References

Related Articles

Journal Cover

November 2018
Volume 9 Issue 5

Print ISSN: 2049-9450
Online ISSN:2049-9469

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
APA
Takeda, T., Banno, K., Yanokura, M., Anko, M., Kobayashi, A., Sera, A. ... Aoki, D. (2018). Synchronous endometrial and ovarian cancer in Lynch syndrome with a MSH2 germline mutation: A case report. Molecular and Clinical Oncology, 9, 479-484. https://doi.org/10.3892/mco.2018.1723
MLA
Takeda, T., Banno, K., Yanokura, M., Anko, M., Kobayashi, A., Sera, A., Takahashi, T., Adachi, M., Kobayashi, Y., Hayashi, S., Nomura, H., Hirasawa, A., Tominaga, E., Aoki, D."Synchronous endometrial and ovarian cancer in Lynch syndrome with a MSH2 germline mutation: A case report". Molecular and Clinical Oncology 9.5 (2018): 479-484.
Chicago
Takeda, T., Banno, K., Yanokura, M., Anko, M., Kobayashi, A., Sera, A., Takahashi, T., Adachi, M., Kobayashi, Y., Hayashi, S., Nomura, H., Hirasawa, A., Tominaga, E., Aoki, D."Synchronous endometrial and ovarian cancer in Lynch syndrome with a MSH2 germline mutation: A case report". Molecular and Clinical Oncology 9, no. 5 (2018): 479-484. https://doi.org/10.3892/mco.2018.1723