New recommendations for staging lung cancer using the TNM system for description of the primary tumor (T), the regional lymph nodes (N), and distant metastases (M) have been adopted by the American Joint Committee on Cancer and the Union Internationale Contre le Cancer. Revisions in TNM definitions and stage grouping rules were made in response to the needs of investigators throughout the world for staging that is consistent in meaning among all specialties and among all countries. The new international system has five stage groups, 0, I, II, IIIa, IIIb and IV, that provide for classification of six levels of disease extent. A number of elements used in prior staging recommendations have been retained; however, new descriptors for the degree of progression in tumors with extrapulmonary extension and for the levels of regional lymph node metastasis have been structured. The new system allows for specific definition of «limited» and «extensive» disease categories that can be reproduced and compared. It meets the goal of providing an internationally acceptable staging system for lung cancer that is useful for estimating prognosis, reporting end results and selection of appropriate treatment.
Impact factor
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
© Clarivate Analytics, Journal Citation Reports 2022
Impact factor 2023
8.7
Citescore 2023
3.5
CiteScore Percentile
CiteScore Percentile indicates the relative standing of a serial title in its subject field.
See moreCiteScore Percentile 2022
41 %
SJR
SRJ is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and qualitative measure of the journal's impact.
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0.46
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