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European Journal of Gynaecological Oncology  2020, Vol. 41 Issue (3): 465-467    DOI: 10.31083/j.ejgo.2020.03.5056
Case Report Previous articles | Next articles
Juvenile ovarian mature teratoma with malignant transformation diagnosed after laparoscopic surgery: A case report
Nozomu Yanaihara1(), Chihiro Sato1, Masami Iwamoto2, Kazu Ueda1, Aikou Okamoto1
1Department of Obstetrics and Gynecology, The Jikei University School of Medicine 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan
2Department of Pathology, The Jikei University School of Medicine 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan
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Abstract  

Malignant transformation of an ovarian mature teratoma is rare, and it might be diagnosed following laparoscopic surgery in women of reproductive age. Here we report a rare juvenile case of squamous cell carcinoma arising in an ovarian mature teratoma. A 29-year-old woman with a preoperative diagnosis of ovarian mature teratoma underwent single-incision laparoscopic surgery, in which tumor resection was performed extracorporeally following fine-needle aspiration of the cystic contents. Histopathological examination revealed squamous cell carcinoma arising in a mature teratoma of the right ovary. Subsequent right salpingo-oophorectomy and partial omentectomy showed no evidence of a residual malignant component. Because the rate of tumor rupture is significantly higher with the laparoscopic approach than with the laparotomy approach, maximum efforts should be made to avoid intraoperative tumor spillage in cases of an ovarian mature teratoma considering the possibility of unexpected malignancy.

Key words:  Laparoscopic surgery      Malignant transformation      Ovarian mature teratoma     
Submitted:  16 November 2018      Accepted:  21 January 2019      Published:  15 June 2020     
*Corresponding Author(s):  Nozomu Yanaihara     E-mail:  yanazou@jikei.ac.jp

Cite this article: 

Nozomu Yanaihara, Chihiro Sato, Masami Iwamoto, Kazu Ueda, Aikou Okamoto. Juvenile ovarian mature teratoma with malignant transformation diagnosed after laparoscopic surgery: A case report. European Journal of Gynaecological Oncology, 2020, 41(3): 465-467.

URL: 

https://ejgo.imrpress.com/EN/10.31083/j.ejgo.2020.03.5056     OR     https://ejgo.imrpress.com/EN/Y2020/V41/I3/465

Figure 1.  — Pelvic magnetic resonance imaging studies of the present case. (a) Axial T2-weighted image. (b) Axial T1-weighted image. (c) Axial T1-weighted image with fat saturation.

Figure 2.  — Laparoscopic view and pathological findings of the present case. Pathological findings of the right ovarian tumor on hematoxylin and eosin staining. Original magnification, ×100.

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