J Korean Soc Radiol.  2010 Mar;62(3):271-276. 10.3348/jksr.2010.62.3.271.

Enhancing Solid Component within Mature Ovarian Teratomas on MR: Does it Indicate a Malignant Transformation?

• Song MG
• Kim KA
• Lee CH
• Choi J
• Lee J
• Kim YH
• Park CM

• KMID: 2208923
• DOI: http://doi.org/10.3348/jksr.2010.62.3.271

Abstract

PURPOSE
To evaluate the enhancing solid component within mature ovarian teratomas on pelvic MR examinations.
MATERIALS AND METHODS
Thirty-two women with surgically proven mature cystic teratomas underwent preoperative pelvic MR examinations. Five cases had an enhancing solid component within mature cystic ovarian teratomas on MR images. The MR images were retrospectively analyzed by two radiologists by consensus, focusing on the enhancing portion of tumor and the tumor itself.
RESULTS
The study subjects include 5 patients (15.6%) with enhancing solid components within the mature ovarian cystic teratomas. The mean tumor size was 9.8 cm and they were all unilateral. The enhancing solid components of the tumors had a variable appearance and were located in the peripheral region. No cases were found to have a transmural extension or direct invasion of the neighboring pelvic organ.
CONCLUSION
An enhancing solid component associated with mature ovarian teratomas is not uncommon. This finding does not however, necessarily indicate malignant transformation.

MeSH Terms

Consensus
Female
Humans
Magnetic Resonance Imaging
Ovarian Cysts
Ovarian Neoplasms
Retrospective Studies
Teratoma

Figure

• 

  Fig. 1 Benign mature cystic teratoma of right ovary in a 40-year-old woman (patient 3 on table 2). Axial T1-weighted (A) and fat-suppression (B) MR images show large lobulated mass containing fat component (arrows). At more caudal level, axial T1-weighted fat-suppression (C) and contrast-enhanced fat-suppression (D) MR images show ovoid enhancing portion (arrows) within the mass.

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  Fig. 2 Benign mature cystic teratoma of left ovary in a 6-year-old girl (patient 5 on table 2). Axial T1-weighted (A) and fat-suppression (B) MR images show large multiloculated mass containing fat component (arrows). At more cranial level, axial T1-weighted (C) and contrast-enhanced (D) MR images show horseshoe-shaped enhancing portion (arrows) within the mass.

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  Fig. 3 Benign mature cystic teratoma of left ovary in a 25-year-old woman (patient 4 on table 2). Axial T1-weighted (A) and fat-suppression (B) MR images show large multiloculated ovoid mass containing fat component (arrows). At more caudal level, axial T1-weighted fat-suppression (C) and contrast-enhanced (D) MR images show Y-shaped enhancing portion (arrows) within the mass.

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