Struma ovarii: Appearance on MR images

I. Joja, T. Asakawa, A. Mitsumori, T. Nakagawa, Y. Hiraki, T. Kudo, M. Ando, N. Akamatsu

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Background: The purpose of this multi-institutional study was to examine the appearance of struma ovarii on magnetic resonance (MR) images. Methods: MR images of 12 patients with histologically proven struma ovarii were retrospectively reviewed. All patients underwent T1-weighted and T2-weighted imaging. Contrast-enhanced T1-weighted images with Gd-DTPA were available in 10 patients. The following determinations were made: tumor morphology, signal intensities, contrast-enhancement effects of solid components with Gd-DTPA, and comparison of MR images with resected specimens. Results: All 12 patients had both cystic and solid components, with a multilobulated surface and thickened septa. Signal intensities on T1-weighted images were mainly low, partly intermediate to high, or high, and those on T2-weighted images were mainly high, with different signal intensities. Contrast-enhancement effects were marked or moderate. The contents that showed low signal intensities on T1-weighted images and signal voids or low signal intensities on T2-weighted images were viscid gelatinous materials. Conclusions: A multicystic tumor with a solid component, a multilobulated surface, and signal intensities that indicate the presence of viscid gelatinous materials appear to be a characteristic MR finding of struma ovarii.

Original languageEnglish
Pages (from-to)652-656
Number of pages5
JournalAbdominal Imaging
Issue number6
Publication statusPublished - 1998
Externally publishedYes


  • MR imaging
  • Neoplasms
  • Ovaries
  • Struma ovarii
  • Thyroid

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Gastroenterology
  • Urology


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