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Depth of tumor invasion better predicts prognosis than the current American Joint Committee on Cancer T classification for distal bile duct carcinoma

Authors
Hong, Seung-MoPawlik, Timothy M.Cho, HyungJunAggarwal, BhuvneshGoggins, MichaelHruban, Ralph H.Anders, Robert A.
Issue Date
8월-2009
Publisher
MOSBY-ELSEVIER
Citation
SURGERY, v.146, no.2, pp.250 - 257
Indexed
SCIE
SCOPUS
Journal Title
SURGERY
Volume
146
Number
2
Start Page
250
End Page
257
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119545
DOI
10.1016/j.surg.2009.02.023
ISSN
0039-6060
Abstract
Background. The American joint Committee on Cancer (AJCC) T classification system for cholangiocarcinoma does not take into account the unique pathologic features of the bile duct. As such, the current AJCC T classification for distal cholangiocarcinoma may be inaccurate. Methods. A total of 14 7 patients with distal cholangiocarcinoma were identified from a single institution database. The prognostic importance of depth of tumor invasion relative to the AJCC T classification system was assessed. Results. The A C T classification was T1 (n = 11, 7.5%), T2 (n = 0, 4.1%), T3 (n = 73, 49.7%), or T4 (n = 5 7, 38.8%). When cases were analyzed according to depth of tumor invasion, most lesions were >= 5 mm (<5 mm, 9.5%; range, 5-12, 5 1.0%; >12 mm, 39.5%). The AJCC T classification was not associated with survival outcome (median survival, T1, 40.1 months; T2, 14.8 months; T3, 16.5 months; 74, 20.2 months; P = .17). In contrast, depth of tumor invasion was associated with a worse outcome as tumor depth increased (median survival, <5 mm, not reached; range, 5-12, 28.9 months; >12 mm, 12.9 months; P =. 001). On multivariate analyses, tumor depth remained the factor most associated with outcome (<.5 mm; hazard ratio [HR] = referent vs 5-12 mm; HR = 3.8 vs >12 mm; HR = 6.7 mm; P =. 001). Conclusion. The AJCC T classification for distal cholangiocarcinoma does not accurately predict prognosis. Depth of the bile duct carcinoma invasion is a better alternative method to determine prognosis and should be incorporated into the pathologic assessment of resected distal cholangiocarcinoma. (Surgery 2009,146:250-7.)
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정경대학 (통계학과)
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