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Case Reports
. 2025 Jun 19;19(1):285.
doi: 10.1186/s13256-025-05152-y.

Struma ovarii-diagnostic and treatment strategy: a case report

Mohammed Alnaggar  1   2 , Mueataz A Mahyoub  3   4 , Nabil Alshargabi  5 , Li Gong  6
Affiliations
Case Reports

Struma ovarii-diagnostic and treatment strategy: a case report

Mohammed Alnaggar et al. J Med Case Rep. .

Abstract

Introduction: Struma ovarii is an uncommon ovarian tumor primarily composed of thyroid tissue, accounting for approximately 1-3% of ovarian teratomas.

Case presentation: We present the case of a 68-year-old Chinese female patient presenting with recurrent urethral outlet tumescence and an adnexal mass, whose diagnosis was established through ultrasonography, pelvic computed tomography, and magnetic resonance imaging. Subsequently, the patient underwent laparoscopic left adnexectomy, and histopathological examination confirmed the presence of struma ovarii in the left ovary.

Conclusion: Struma ovarii poses unique diagnostic and management challenges owing to its rarity. A multidisciplinary approach incorporating clinical, imaging, and histological evaluations is essential for accurate diagnosis and optimal treatment outcomes. Surgical excision remains the cornerstone of treatment, typically resulting in a favorable prognosis when performed promptly and appropriately.

Keywords: A case report; Adnexal mass; Adnexectomy; Ovarian teratoma; Struma ovarii.

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Conflict of interest statement

Declarations. Ethics approval and consent to participate: Written informed consent was obtained from the patients for participation in this study. Consent for publication: Written informed consent was obtained from the patient for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal. Competing interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Fig. 1
Fig. 1
Diagnostic and treatment strategy of struma ovarii
Fig. 2
Fig. 2
An unenhanced computed tomography scan of the pelvis revealing a mixed-density shadow in the left adnexal region (red arrow)
Fig. 3
Fig. 3
A transvaginal ultrasound revealing a solid ovarian mass in the left adnexal region, characterized by irregular internal echoes and small, irregular anechoic areas (red arrow)
Fig. 4
Fig. 4
Pelvic magnetic resonance imaging (MRI): partial short T2-weighted signal on the short T1-weighted lipid-suppressed sequence, partial isointense signal on T1-weighted imaging, and isointense signal on T2-weighted imaging, with no significant enhancement on the perfusion-enhanced scan (red arrow)
Fig. 5
Fig. 5
Pathological findings. A Displaying a stratified squamous epithelium with multiple cell layers and prominent nuclei, suggesting it may form the epithelial lining of a cyst wall. B Showing cuboidal epithelial cells organized into thyroid follicle-like structures filled with a light pink substance. The follicles vary in size and shape, creating an irregular pattern
See this image and copyright information in PMC

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