EYES2022 ESE Young Endocrinologists and Scientists (EYES) 2022 Endocrine-related Cancer (11 abstracts)
Synchronous eutopic and ectopic papillary thyroid carcinoma
Guia Lopes M. L. 1 , Saraiva C 1 , Antunes C 1 , Silva E 1 , Limbert C 1 , Chorão M 3 , Viana Fernandes L 2 & Sequeira Duarte J 1
1Centro Hospitalar de Lisboa Ocidental, Endocrinology; 2Centro Hospitalar de Lisboa Ocidental, General Surgery; 3Centro Hospitalar de Lisboa Ocidental, Anatomopathology
Background: Papillary thyroid carcinomas are the most common thyroid malignancies. They are more prevalent in women and have a bimodal age distribution. Thyroglossal duct cyst carcinomas are extremely rare (occurring in only 1% of all thyroglossal duct cysts). The large majority of these carcinomas are of thyroid origin.
Case presentation: A 25-year-old woman with no significant medical history was referred to the Endocrinologist with 1-month complaints of cervical swelling. On cervical ultrasound, a predominantly cystic nodule with 22x27x32 mm was reported in the central lower maxillary region (above the hyoid bone). Its solid component was hyperechoic and hypervascularized. In the isthmus it was reported an EU-TIRADS 5 micronodule (7x6x8mm) with microcalcifications. A fine needle aspiration cytology (FNAC) of the submaxillary mass was performed. Thyroglobulin measurement in the washout fluid was >500 ng/mL and calcitonin was negative. The cytological result was consistent with papillary thyroid carcinoma. FNAC of the thyroid micronodule also reported papillary thyroid carcinoma. The patient underwent total thyroidectomy as well as excision of the thyroglossal duct mass. The pathology report revealed the presence of foci of classic papillary thyroid carcinoma in the thyroglossal duct and in the adjacent thyroid tissue. The tumor extensively invaded the hyoid bone and the adjacent fibromuscular tissues. Two foci of classic capsulated papillary thyroid carcinoma, both infracentimetric (0,7 and 0,6 cm), were identified. Post-surgery radiodine ablation was performed.
Conclusions: The authors describe an unusual presentation of multifocal papillary thyroid carcinoma. Ectopic papillary thyroid carcinomas are extremely rare (1-3%). The involvement of thyroglossal duct cyst is even more uncommon. This case serves to emphasize the importance of thyroid nodules surveillance, especially in young women.
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Endocrine Abstracts
ISSN 1470-3947 (print) | ISSN 1479-6848 (online)
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