Solitary fibrous tumor of the thyroid gland with intrathoracic extension

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Carlos Simón Duque F.
Juliana Sierra Z.
Juan Fernando Muñoz T.
Wilfredy Castaño R.
Andrés Zerrate M.
Alejandro Vélez H.

Keywords

Intrathoracic goiter, solitary fibrous tumor, thyroid

Abstract

Solitary fibrous tumor (SFT) is a rare mesenchymal neoplasm initially described as spindle cells in the pleura but recognized location elsewhere. The TFS thyroid gland (TFST) even infrequent. A case of a 65 year old woman with progressive growth of a right cervical mass without associated symptoms described other than cosmesis is described. The patient had a thyroid mass in the right lobe with intrathoracic extension. A right Hemi thyroidectomy and thoracotomy for the extent of the mass was performed. Pathology reported a 15 cm tumor with spindle cell and growth pattern hemangiopericitic without pleomorphism, atypia, mitosis or necrosis. Immunohistochemistry was positive for CD34, Bcl-2, CD99 and vimentin, making the diagnosis of solitary fibrous tumor of thyroid gland. The patient’s right Vagus nerve was injured intraoperatively and she is currently under voice therapy. Currently now, almost six months after her surgery she is free of disease.

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