## Abstract ## BACKGROUND Although the histologic classification of thymic epithelial tumors has been confusing and controversial, an agreement on the universal classification system for thymic epithelial tumors was achieved by the World Health Organization (WHO) in 1999. The authors previously re
Oncological significance of WHO histological thymoma classification
β Scribed by Meinoshin Okumura; Mitsunori Ohta; Shinichiro Miyoshi; Takashi Mori; Tsutomu Yasumitsu; Kazuya Nakahara; Keiji Iuchi; Hiroto Tada; Hajime Maeda; Hikaru Matsuda
- Publisher
- Springer Japan
- Year
- 2002
- Tongue
- Japanese
- Weight
- 176 KB
- Volume
- 50
- Category
- Article
- ISSN
- 1863-6705
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π SIMILAR VOLUMES
The WHO histological classification of urinary bladder tumours was formulated to promote better international communication and more reliable statistical comparisons. The axes of classification concern histological type, grade of anaplasia and growth pattern.
## Abstract ## BACKGROUND In 1999, a World Health Organization (WHO) committee published histologic criteria for distinct thymoma entities (labeled as Type A, AB, B1, B2, B3 thymomas) and for the heterogeneous group of thymic carcinomas, collectively called Type C thymomas. Whether WHOβdefined his