Value of 3.0 T diffusion-weighted imaging in discriminating thecoma and fibrothecoma from other adnexal solid masses

Journal of Ovarian Research

Hao Zhang²  Tian-Ping Wang¹  Guo-Fu Zhang¹  He Zhang¹ 

[1] Department of Radiology,Obstetrics and Gynecology Hospital, Fudan University, No. 419, Fang Xie Road, Shanghai 200011, China;Department of Radiology, Shanghai First People’s Hospital, Medical College, Shanghai Jiaotong University, Shanghai 200080, China

关键词: Diffusion-weighted imaging;    Magnetic resonance imaging;    Ovarian solid mass;    Thecoma;   

Others  :  805968
DOI  :  10.1186/1757-2215-6-58

 received in 2013-05-23, accepted in 2013-08-18,  发布年份 2013

【 摘 要 】

Background

To investigate the value of diffusion-weighted imaging (DWI) at 3.0 T (3T), and especially the apparent diffusion coefficient (ADC), in discriminating ovarian thecoma from other adnexal solid masses.

Methods

Eighteen thecomas or fibrothecomas, 14 ligamentous leiomyomas, and 24 other ovarian solid tumors underwent prospective DWI magnetic resonance imaging (MRI) in addition to routine MRI on a 3T MRI machine. The baseline characteristics, components, and conventional MRI and DWI-MRI signals for the thecomas were recorded. The ADC values (ADCs) were measured for each group and compared.

Results

The thecomas often appeared as homogeneous isointensity (17/18) on T1-weighted images (T₁WI; 11/18) or T₂WI (11/18) on DWI-MRI, with minor (9/18) or mild (6/18) enhancement. The mean ADC value for thecoma (1.20 ± 0.45 × 10⁻³ mm²/s) was almost equal to that of the other solid ovarian masses (1.26 ± 0.51 × 10⁻³ mm²/s), but lower than that for leiomyoma (1.48 ± 0.42 × 10⁻³ mm²/s), although not significantly so. There was a significant difference (p = 0.043) in the ADCs of the benign ovarian solid masses (1.16 ± 0.47 × 10⁻³ mm²/s) and leiomyomas (1.48 ± 0.42 × 10⁻³ mm²/s).

Conclusions

There is no significant difference in ADC between thecoma and other adnexal solid masses, but the ADCs of thecomas are lower than those of leiomyomas.

【 授权许可】

   
2013 Zhang et al.; licensee BioMed Central Ltd.

【 图 表 】

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