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Case Reports: Rare disease
Papillary thyroid carcinoma in struma ovarii: management after surgery
  1. Chandriya Chandran1,
  2. Patamaporn Lekprasert1,
  3. Corrado Minimo2 and
  4. Kay Win1
  1. 1Department of Endocrinology, Metabolism and Diabetes, Albert Einstein Medical Center, Philadelphia, Pennsylvania, USA
  2. 2Department of Pathology, Albert Einstein Medical Center, Philadelphia, Pennsylvania, USA
  1. Correspondence to Dr Chandriya Chandran; chandriyachandran{at}gmail.com

Abstract

A woman in her 40s presented with a 3-month history of lower abdominal pain and intermenstrual bleeding. Ultrasound of the pelvis disclosed a 4 cm left adnexal mass. An MRI of the pelvis revealed a 2.2×3.6×2.4 cm solid, enhancing left ovarian mass. Due to high suspicion for malignancy, she underwent laparoscopic left salpingo-oophorectomy and resection of the tumour. Histopathology revealed papillary thyroid carcinoma in the background of struma ovarii as confirmed by thyroglobulin and thyroid transcription factor-1 positivity on immunohistochemistry. BRAF mutation analysis was negative. An ultrasound of the thyroid gland showed two low-risk nodules. An iodine-123 whole-body scan showed normal uptake in the thyroid gland. Thyroid-stimulating hormone (TSH) was 1.070 mcIU/mL (0.450–4.500), and thyroglobulin was 6.8 ng/mL (1.5–38.5). We risk-stratified this patient as low risk for recurrence. Risk stratification of malignant struma ovarii is essential to determine suitable thyroid targeting adjuvant therapy and reduce the risk of recurrence.

  • Endocrine system
  • Thyroid disease
  • Obstetrics and gynaecology
  • Endocrine cancer
  • Gynecological cancer

https://doi.org/10.1136/bcr-2022-252129

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    Footnotes

    • Contributors CC and PL managed the patient after extensive literature review, with input from CM. CC wrote up the case with assistance from PL. KW provided input in certain sections.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; externally peer reviewed.