Adequacy of lymph node retrieval for ampullary cancer and its association with improved staging and survival.
World J Surg
; 37(6): 1397-404, 2013 Jun.
Article
em En
| MEDLINE
| ID: mdl-23546531
ABSTRACT
BACKGROUND:
The aim of the present study was to determine the optimal number of lymph nodes (LN) examined to stage pN0 tumors after surgery for ampulla of Vater carcinoma (AVC).METHODS:
We reviewed retrospectively 127 patients with AVC who underwent pancreaticoduodenectomy (1990-2008). Univariate and multivariate analysis was performed.RESULTS:
Fifty-nine patients (46.5 %) were pN0, whereas 68 patients (53.5 %) were pN1. The 5-year disease-specific survival (DSS) was worse for pN1 patients than for pN0 patients (46 vs. 77 %; P < 0.0001). In the pN0 cohort, the optimal cut-off number of LN analyzed was found to be 12. The 5-year DSS for patients with ≤ 12 LN was 50 %, compared with 89 % in those with >12 LN (P = 0.001). By multivariate analysis, a LN count >12 was the only independent predictor associated with improved survival (HR 0.16, P = 0.003) among pN0 patients. Among pN1 patients, a LN count >12 was associated with a significantly better 5-year DSS (59 vs. 22 %; P = 0.027). Patients with a lymph node ratio (LNR) >0.20 had a 5-year DSS of 24 %, compared with 58 % in those with 0 < LNR ≤ 0.20 (P = 0.038).CONCLUSIONS:
Removal of more than 12 LN for examination is associated with improved survival rate after surgery for AVC in both pN0 and pN1 patients.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Ampola Hepatopancreática
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Neoplasias do Ducto Colédoco
Tipo de estudo:
Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
World J Surg
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Itália