Archives of Head and Neck Surgery
Archives of Head and Neck Surgery
Case Report Thyroid diseases and tumors

Myxofibrosarcoma of the thyroid gland

Maria da Graça Caminha Vidal, Onivaldo Cervantes, Melissa Falster Daubermann, Fernando Cogo Manduca, Aloysio Enck Neto

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Introduction: Thyroid cancer is the most common endocrine cancer, corresponding to 1% of all malignancies in the 30-74 age group. Cases of primary thyroid sarcomas are rare in the literature. They tend to present an unfavorable clinical course. Case report: Female patient, 66 years old, presented a visible neck mass with progressive growth for 2 years ago, reporting dysphagia for solids. Presence of exophytic nodular growth in the left lobe was evidenced through the examinations, and classified as Bethesda I through fine needle aspiration biopsy (FNAP). Total thyroidectomy revealed a low-grade myxofibrosarcoma (MFS). Discussion: MFS presents higher incidence in the elderly. Diagnosed by histopathological examination, evaluation through magnetic resonance imaging (MRI) is necessary in order to analyze the surgical resection plans with tumor-free margins. As MFS presents rare occurrence in the thyroid gland and a high local recurrence rate, adjuvant radiotherapy can be considered as a form of recurrence control.


thyroid gland; thyroid nodule; thyroid neoplasms.


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