Granular Cell Tumor of the Thyroid
Article Outline
Abstract
Granular cell tumors (GCT) can occur in a wide variety of organs, but are rare in the thyroid. To the best of our knowledge, only four cases of thyroid GCT have been reported in the literature. We report a GCT of the thyroid in a girl aged 12 years who presented with a painless neck mass. Thyroid function tests and the serum calcium level were within normal limits. A thyroid ultrasound demonstrated a round hypoechoic mass in the thyroid isthmus. Histologically, the tumor cells demonstrated abundant granular eosinophilic cytoplasm. The tumor cells were positive for S-100 protein and vimentin, and were negative for thyroglobulin, calcitonin, thyroid transcription factor-1, chromogranin A, synaptophysin, and cytokeratin. The patient had no recurrence and remained well at the 10-month postoperative follow-up visit. We reviewed the literature for reports of thyroid GCTs and compared them with reports of extrathyroid GCTs.
Keywords: Granular cell tumor , Schwann cell , Thyroid
No full text is available. To read the body of this article, please view the PDF online.
References
- . Granular cell tumor of the trachea . Otolaryngol Head Neck Surg . 1999;120:595–598
- . Granular cell tumor of the thyroid gland in a girl receiving high-dose estrogen therapy . Pediatr Pathol Lab Med . 1995;15:791–795
- . Granular cell tumor of the thyroid . Arch Pathol Lab Med . 2001;125:544–546
- . Granular cell tumour of the thyroid gland . Histopathology . 2004;44:190–191
- . Granular cell tumor of the thyroid: a case report . Int J Surg Pathol . 2005;13:291–294
- . Granular cell tumor: an immunohistochemical study . Tumori . 1994;80:224–228
- . Granular cell tumor: a review and update . Adv Anat Pathol . 1999;6:186–203
- . Origin of granules in granular cell tumor. Intracellular myelin formation with autodigestion . Arch Pathol Lab Med . 1988;112:302–303
- . Granular cell myoblastoma: clinicopathologic study of forty-two patients . Am J Clin Pathol . 1969;52:208–211
- Granular cell tumor: a clinicopathologic study of 110 patients . J Surg Oncol . 1980;13:301–316
- . Malignant granular cell tumor of soft tissue: diagnostic criteria and clinicopathologic correlation . Am J Surg Pathol . 1998;22:779–794
PII: S1016-3190(09)60012-4
doi:10.1016/S1016-3190(09)60012-4
© 2009 Buddhist Compassion Relief Tzu Chi Foundation. Published by Elsevier Inc. All rights reserved.
