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SAGE Publications, International Journal of Surgical Pathology, 6(22), p. 499-504

DOI: 10.1177/1066896914545399

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Tall Cell Variant of Papillary Thyroid Carcinoma in Children

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Papillary thyroid carcinoma (PTC), tall cell (TC) variant, is exceptional in children. In adults it represents about 20% of PTCs, featuring a high-risk neoplasm, with a 4-fold risk of relapse and a 20-fold relapse-related risk of death. Out of 42 cases of pediatric PTCs, we found 3 cases of PTC-TC (7%) with clinical data at onset and follow-up up to June 2014. They were 3 females aged 13, 15, and 15 years. Local extrathyroid extension was present in 2 cases. Neither nodal nor distant metastases were found. Two patients underwent hemithyroidectomy and 1 patient a total thyroidectomy, followed in all cases by life-long suppressive hormonal therapy. On follow-up, the patients were alive and well after 29, 24, and 29 years, respectively. The rarity of PTC-TC in children was confirmed. The behavior was indolent after a median follow-up of about 29 years, following treatment with hemithyroidectomy in 2 cases and controlled by suppressive hormonal therapy. The results of this series, albeit small, suggest that TC morphology in PTC does not carry the same negative prognostic significance in children as it does in adults. A conservative approach should therefore be considered for these ‘pediatric type’ cases of this tumor type.