title: Sentinel node biopsy in patients with primary cutaneous melanoma of any thickness: A cost-effectiveness analysis.
abstract: OBJECTIVE
  To assess the cost-effectiveness of the sentinel node biopsy with lymphadenectomy for nodal metastases (SNB) in patients with primary cutaneous melanoma (CM) of different Breslow thickness (intermediate, thick, thin).
  
  
  METHODS
  Decision tree models were constructed to compare two different strategies of management of patients with CM, wide excision of the primary lesion and SNB and wide excision only (WE). Tree models were created for every Breslow thickness over 1-, 5- and 10-year time horizons. Mean and total direct healthcare costs, life years saved (LYSs), quality-adjusted life years (QALYs), cost effectiveness ratio (CER), and incremental cost effectiveness ratio (ICER) were estimated. Every model was considered as a base case, and its results tested with sensitivity analyses.
  
  
  RESULTS
  Base case analyses showed that the best results were obtained for intermediate CM over 10-year time horizon. In this case, ICER for SNB was 130,508€/QALY, well over the threshold of acceptance (30,000€/QALY). In patients with intermediate CM over 1 and 5 years, and for those with thick and thin CM at any time horizon, negative ICER values were estimated since SNB was proved to be more expensive and less effective than WE. Sensitivity analyses confirmed the robustness of our results.
  
  
  CONCLUSIONS
  SNB caused no improvement in health outcomes in terms of LYSs and QALYs in patients with thick and thin CM, and only a slight benefit in those with intermediate CM. WE was more cost-effective compared with SNB for any CM thickness over any time horizon up to 10 years.
authors: Department of Health Sciences, Public University of Navarra, Pamplona, Spain; Department of Nuclear Medicine, Navarra Hospital, Pamplona, Spain. Electronic address: pserraarbeloa@gmail.com.
authors: Patricia
authors: P
authors: Serra-Arbeloa
authors: Applied Medical Research Program, University of Navarra, Pamplona, Spain. Electronic address: angrab@gmail.com.
authors: Ángel Orlando
authors: ÁO
authors: Rabines-Juárez
authors: Department of Nuclear Medicine, Miguel Servet Hospital, Zaragoza, Spain. Electronic address: solalvarezruiz@hotmail.com.
authors: María Soledad
authors: MS
authors: Álvarez-Ruiz
authors: Department of Health Sciences, Public University of Navarra, Pamplona, Spain; Department of Preventive Medicine, University of Navarra Clinic, Pamplona, Spain; IDISNA Navarra Health Research Institute, Spain. Electronic address: f.guillen.grima@gmail.com.
authors: Francisco
authors: F
authors: Guillén-Grima
mesh_terms: D003362:Cost-Benefit Analysis; D006801:Humans; D008545:Melanoma / Q000191:economics* / Q000473:pathology / Q000601:surgery; D015233:Models, Statistical; D009367:Neoplasm Staging; D011379:Prognosis; D021701:Sentinel Lymph Node Biopsy / Q000191:economics*; D012878:Skin Neoplasms / Q000191:economics* / Q000473:pathology / Q000601:surgery; D000096142:Cutaneous Malignant Melanoma
keywords: Breslow thickness; Cost-effectiveness analysis; Cutaneous melanoma; Lymphadenectomy; Sentinel node biopsy