Classification of thymic epithelial neoplasms: a controversial issue coming to an end?
Article first published online: 1 MAY 2007
Journal of Cellular and Molecular Medicine
Volume 5, Issue 4, pages 442–448, October 2001
How to Cite
Kuo, T.-T. (2001), Classification of thymic epithelial neoplasms: a controversial issue coming to an end?. Journal of Cellular and Molecular Medicine, 5: 442–448. doi: 10.1111/j.1582-4934.2001.tb00182.x
- Issue published online: 1 MAY 2007
- Article first published online: 1 MAY 2007
- Received: October 10, 2001; Accepted in revised form: November 26, 2001
- thymic epithelial neoplasm;
- thymic carcinoma;
- histological classification;
The classification of thymic epithelial neoplasms has been one of the most controversial issues in tumor pathology. There are two opposing schools of pathologists holding different views regarding the classification of thymic epithelial neoplasms. One school of pathologists believe that histological classification of thymomas is not possible or useful. Another school of pathologists believe that thymomas can be histologically subclassified despite their complex histomorphology and that these histological subtypes correlate with their aggressiveness and clinical behavior. A compromised histological classification has been established by World Health Organization (WHO) to designate thymic epithelial neoplasms with letters and numbers. This classification should be adopted internationally to facilitate the communication among concerned pathologists and oncologists. A simple histological classification of thymomas based on cytomorphology and supported by cytokeratin expressions is proposed and compared to the WHO and Müller-Hermelink's histogenetic classifications.