Napsin A expression in anaplastic, poorly differentiated, and micropapillary pattern thyroid carcinomas.

@article{Chernock2013NapsinAE,
  title={Napsin A expression in anaplastic, poorly differentiated, and micropapillary pattern thyroid carcinomas.},
  author={Rebecca D Chernock and Samir El-Mofty and Nils Becker and James S Lewis},
  journal={The American journal of surgical pathology},
  year={2013},
  volume={37 8},
  pages={1215-22}
}
Napsin A is a sensitive and specific marker for pulmonary adenocarcinoma versus squamous cell carcinoma. However, studies have shown that napsin A is also positive in approximately 5% of papillary thyroid carcinomas. The prevalence of napsin A in more aggressive types of thyroid carcinoma is unknown. Napsin A positivity in metastatic thyroid carcinoma, especially in conjunction with thyroid transcription factor-1 (TTF-1), could be misdiagnosed as lung adenocarcinoma. We investigated napsin A… CONTINUE READING
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