Malignant solitary fibrous tumor of the thyroid: a case-report and review of the literature

Author:

Alves Filho Wellington1,Mahmoud Renata Regina da Graça Lorencetti1,Ramos Daniel Marin1,Araujo-Filho Vergilius José Furtado de1,Lima Patricia Picciarelli de2,Cernea Claudio Roberto1,Brandão Lenine Garcia1

Affiliation:

1. University of Sao Paulo, Brazil

2. FMUSP, Brazil

Abstract

Solitary fibrous tumor (SFT) is an uncommon spindle-cell neoplasm that most often involves the pleura, rarely occurring in extra-thoracic locations. Twenty-six cases of SFT arising in the thyroid gland have been described. We report a case of a 60-year-old woman presenting an 8-month history of enlargement of the neck associated with dysphagia. The patient underwent a right hemithyroidectomy and SFT of the thyroid was diagnosed. Immunohistochemistry showed positivity for CD34 marker, and the high number of mitoses and the presence of cellular atypia suggested that the tumor was malignant. To our knowledge, this is the second case of malignant SFT of the thyroid gland ever reported. Due to the rarity of these tumors, the indication of adjuvant therapy and prognosis are uncertain. Long-term follow-up after surgical resection seems to be advisable.

Publisher

FapUNIFESP (SciELO)

Subject

General Medicine,Endocrinology, Diabetes and Metabolism

Reference20 articles.

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5. Solitary fibrous tumor of the thyroid: cytopathologic findings and differential diagnosis;Parwani AV;Diagn Cytopathol,2003

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