1. Prognostic Value of Perineural Invasion in Resected Gastric Cancer Patients According to Lauren Histotype
- Author
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Giulio Di Mare, Lorenzo Giacinto De Franco, Franco Roviello, Daniele Marrelli, Livio Iudici, Mario Marini, Carla Vindigni, Costantino Voglino, and Francesco Ferrara
- Subjects
Male ,Cancer Research ,medicine.medical_specialty ,Pathology ,Lymphovascular invasion ,medicine.medical_treatment ,Perineural invasion ,Kaplan-Meier Estimate ,Adenocarcinoma ,Prognostic factors ,Gastroenterology ,Disease-Free Survival ,Extended lymphadenectomy ,Pathology and Forensic Medicine ,Gastric cancer ,Lauren histotype ,Aged ,Cohort Studies ,Female ,Humans ,Middle Aged ,Neoplasm Invasiveness ,Neoplasm Staging ,Peripheral Nerves ,Prognosis ,Proportional Hazards Models ,Retrospective Studies ,Stomach Neoplasms ,2734 ,Oncology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Medicine ,Survival analysis ,Univariate analysis ,Proportional hazards model ,business.industry ,Hazard ratio ,Cancer ,General Medicine ,medicine.disease ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,Lymphadenectomy ,business - Abstract
The purpose of this study is to investigate perineural invasion (PNI) as a prognostic factor in gastric cancer patients. 455 patients submitted to extended (D2 or more) lymphadenectomy (median number of 39 retrieved lymph nodes, range: 15-140) between 1995 and 2012 were retrospectively studied. Patients were categorized in two groups according to the PNI status, and PNI positivity was assessed in presence of cancer cells in the perinerium or the neural fascicles using hematoxylin and eosin staining. Median follow-up for surviving patients was 80.3 months. Survival analysis was performed by univariate and multivariate analysis, using a Cox proportional hazards model. 162 patients (33.9%) had positive PNI; this was strongly associated with advanced stages of disease, residual tumor, lymphovascular invasion, Lauren diffuse-mixed histotype and tumor size. Five-year cancer-related survival was 65,7% and 20,6% in PNI negative vs. positive groups, respectively (p
- Published
- 2017
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