title: Prognostic factors for survival in advanced appendiceal cancers.
abstract: BACKGROUND
  Appendiceal cancer is a rare malignancy. The optimal pathologic classification and prognostic factors for survival and treatment strategies remain poorly understood.
  
  
  OBJECTIVE
  The aim of this retrospective cohort study was to determine prognostic factors, including markers of systemic inflammation, for survival in a cohort of patients with advanced appendiceal adenocarcinomas.
  
  
  METHODS
  The study included patients with advanced appendiceal carcinoma that were treated between January 2006 and June 2012. The associations between age, gender, histopathologic subtype of appendiceal malignancy and treatment with heated intraperitoneal chemotherapy (HIPEC) and overall survival (OS) were assessed. The relationship between various markers of inflammation (platelet-to-lymphocyte ratio, neutrophil-to-lymphocyte ratio) and OS was also evaluated.
  
  
  RESULTS
  A total of 49 patients met eligibility criteria. Female gender and low-grade adenocarcinoma were associated with increased OS. These data suggest that the use of HIPEC treatment may also be associated with improved OS, but the difference was not statistically significant (HR = 0.37 [0.12-1.18], p = 0.09). We found no evidence of an association between markers of inflammation at diagnosis and OS.
  
  
  CONCLUSIONS
  Histopathologic subtype and gender are associated with OS in patients with advanced appendiceal carcinoma. Baseline platelet levels, NLR, and PLR do not appear to be predictive of OS in this setting.
authors: Department of Medicine, Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN, USA.
authors: Fatima
authors: F
authors: Khan
authors: Department of Obstetrics, Gynecology and Women's Health, Division of Gynecologic Oncology, University of Minnesota, Minneapolis, MN, USA.|Biostatistics and Bioinformatics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA.
authors: Rachel I
authors: RI
authors: Vogel
authors: Department of Surgery, University of Minnesota School of Medicine, Minneapolis, MN, USA.
authors: Gustave K
authors: GK
authors: Diep
authors: Department of Surgery, University of Minnesota School of Medicine, Minneapolis, MN, USA.
authors: Todd M
authors: TM
authors: Tuttle
authors: Department of Medicine, Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN, USA.
authors: Emil
authors: E
authors: Lou
mesh_terms: D001063:Appendiceal Neoplasms / Q000401:mortality* / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D016019:Survival Analysis
keywords: Appendiceal cancer; HIPEC; neutrophil-to-lymphocyte ratio; platelet-to-lymphocyte ratio; prognostic factors