Anaplastic Transformation of Papillary Thyroid Carcinoma in a Young Man: A Case Study with Immunohistochemical and BRAF Analysis
Korean Journal of Pathology
; : 234-240, 2014.
Article
em En
| WPRIM
| ID: wpr-207968
Biblioteca responsável:
WPRO
ABSTRACT
This study reports a case of anaplastic transformation from a well-differentiated thyroid carcinoma in a young patient. The first recurrent tissue contained poorly differentiated foci that revealed lower thyroglobulin, thyroid transcription factor 1 (TTF-1), and galectin-3 expression than the well-differentiated area. However there was no increased p53 or Ki-67 expression in the poorly differentiated foci, nor in the well-differentiated area. The tissue subsequently relapsed and revealed only anaplastic features, complete loss of thyroglobulin, TTF-1, and galectin-3 expression and revealed an increase in p53 and Ki-67 expression. The BRAF V600E and BRAF V600V mutation were found in the initially diagnosed papillary thyroid carcinoma and the poorly differentiated foci of the recurring papillary thyroid carcinoma; however, only the BRAF V600V mutation was found in the anaplastic carcinoma. These results suggest that overexpression of p53 and Ki-67 contributed to the anaplastic transformation. We also found that the BRAF type changed during the tumor relapse.
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Texto completo:
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Base de dados:
WPRIM
Assunto principal:
Recidiva
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Tireoglobulina
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Glândula Tireoide
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Fatores de Transcrição
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Neoplasias da Glândula Tireoide
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Imuno-Histoquímica
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Carcinoma
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Galectina 3
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Proteínas Proto-Oncogênicas B-raf
Limite:
Humans
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article