Struma ovarii: appearance on MR images

Joja, Ikuo; Asakawa, T.; Mitsumori, Akihito; Nakagawa, Tomio; Hiraki, Yoshio; Kudo, Takafumi; Ando, Masaaki; Akamatsu, N.

doi:10.1007/s002619900424

Cited by 52 publications

(25 citation statements)

References 15 publications

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“…These included: 1) the presence of both cystic and solid components with a multilobulated surface and thickened septa, 2) various signal intensities seen on both T 1 WI and T2WI, and 3) high-density of the solid components on CT images, which appears as low signal intensity on T2WI. These investigators suggested that the characteristic appearance of SO indicated the presence of viscid material containing iodine [19]. The MRI and CT findings of our case were essentially consistent with the above characteristics.…”

Section: Introductionsupporting

confidence: 78%

“…Joja et al [19] described three characteristic MRI and CT features of SO based on analysis of 13 patients with SO. These included: 1) the presence of both cystic and solid components with a multilobulated surface and thickened septa, 2) various signal intensities seen on both T 1 WI and T2WI, and 3) high-density of the solid components on CT images, which appears as low signal intensity on T2WI.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Coexistence of Graves' Disease and Struma Ovarii: Case Report and Literature Review.

et al. 2001

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Section: Introductionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Coexistence of Graves' Disease and Struma Ovarii: Case Report and Literature Review.

et al. 2001

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“…Thick mucinous or viscid gelatinous material occasionally exhibit a very low signal intensity on T2-weighted images (Fig. 11) [39].…”

Section: Metastasismentioning

confidence: 99%

Ovarian cancer: the clinical role of US, CT, and MRI

Togashi

2003

Eur Radiol

116

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This article presents an overview of ovarian cancer, which addresses the clinical roles of imaging studies, including US, CT, and MR imaging in the course of diagnosis and treatment of this important disease. US is the modality of choice in the evaluation of patients with suspected adnexal masses. Although its accuracy is not sufficient to avert surgery, morphological analysis of adnexal masses with US helps narrow the differential diagnosis, determining the degree of suspicion for malignancy, usually in concert with a serum CA-125 level. Combined morphological and vascular imaging obtained by US appear to further improve the preoperative assessment of adnexal masses. For uncertain or problematic cases, MR imaging helps to distinguish benign from malignant, with an overall accuracy for the diagnosis of malignancy of 93%. The accuracy of MR imaging in the confident diagnosis of mature cystic teratoma, endometrial cysts, and leiomayomas is very high. CT is not indicated for differential diagnosis of adnexal masses because of poor soft tissue discrimination, except for fatty tissue and for calcification, and the disadvantages of irradiation. In the staging of ovarian cancer, CT, US, and MR imaging all have a similarly high accuracy. Although it is difficult to suggest a simple algorithm for evaluating the state of women with adnexal masses, the correct preoperative diagnosis and staging of ovarian cancer with the use of any of these imaging studies will lead to an appropriate referral to a specialist in gynecologic oncology and offer a significant survival advantage for patients with ovarian cancer.

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“…11,12 They examined retrospectively images of histologically proven stroma ovarii and found that a complex mass composed of multiple cysts and a solid component, along with signal intensities, was indicative of the presence of large and small thyroid follicles.…”

Section: Discussionmentioning

confidence: 99%

Sonographic and clinical characteristics of struma ovarii.

Zalel

Seidman

Oren

et al. 2000

Journal of Ultrasound in Medicine

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Our objective was to evaluate the preoperative clinical, laboratory, and sonographic characteristics of struma ovarii in comparison to ovarian dermoid cysts. A retrospective review of gynecologic patients operated on for mature cystic teratoma over a 10 year period identified 12 cases of struma ovarii. These cases, combined with 4 additional cases from an earlier report, were the subject of this study. Results were compared to 32 cases of ovarian dermoid cysts. Ovarian struma ovarii occurred in 12 (4.8%) of 251 cases of ovarian dermoid cysts. Most patients were premenopausal, and the mean lesion diameter was 57.3 mm (range, 30‐95 mm). Struma ovarii occurred more frequently (68.8%) in the right adnexa and was seen with a normal CA‐125 level. Blood flow, assessed by Doppler ultrasonography, was located in the center of the lesion in all cases of struma ovarii. Rare cases were seen with elevated tumor markers and low resistance blood flow. With regard to dermoid cysts, blood flow had a higher resistive index. In addition, no blood flow could be detected from the center of the echoic lesion in dermoid cysts (P < 0.0001). In summary, it is difficult to distinguish between struma ovarii and dermoid cysts on the basis of their sonographic appearance. Nevertheless, Doppler flow may aid in the preoperative diagnosis of struma ovarii. Blood flow signals, detected from the center of the echoic lesion, and low resistance to flow may be more common in struma ovarii.

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Struma ovarii: appearance on MR images

Abstract: 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.

Cited by 52 publications

References 15 publications

Coexistence of Graves' Disease and Struma Ovarii: Case Report and Literature Review.

Coexistence of Graves' Disease and Struma Ovarii: Case Report and Literature Review.

Ovarian cancer: the clinical role of US, CT, and MRI

Sonographic and clinical characteristics of struma ovarii.

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