Josué Hernando1, Pedro Villarreal2, Francisco Álvarez-Marcos3, Luís García-Consuegra4, Lorena Gallego4, Luís Junquera4. 1. Department of Oral and Maxillofacial Surgery, Donostia Hospital, San Sebastian, Spain. Electronic address: josue.hernando@gmail.com. 2. Oral and Maxillofacial Surgery, Private Practice, Oviedo, Spain. 3. Department of Surgery, Central Hospital, Oviedo, Spain. 4. Department of Oral and Maxillofacial Surgery, Oviedo University, Central Hospital, Oviedo, Spain.
Abstract
OBJECTIVE: The aim of this prospective not randomized observational study was to determine the costs and outcomes of sentinel lymph node biopsy (SNB) vs elective neck dissection (END) among patients with early oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS: Seventy-three consecutive patients were divided according to neck staging method. Patients took the decision themselves after receiving detailed information of both suggested treatment tools. False negative (FN) and negative predictive value (NPV) were assessed. Log-rank test was used to compare disease-free survival (DFS) and overall survival (OS). Only direct costs were analysed. Cost information derived from volumes for hospital stay, surgery and neck outcome were obtained from an internal database of tertiary health care center. RESULTS: Thirty-two patients underwent SNB and 41 underwent an END (levels I-III). Average follow-up time was 48.2 months (range 7-80). Five neck recurrences were recorded in the SNB group (range 11-21). Seven neck recurrences occurred in the END group (range 9-16). No significant differences were found in DFS or OS. True negative patients in SNB group incurred in 42% less costs than END group. FN regardless of radiotherapy, was also lower in the SNB group. However, pN+ patients generated 23% more costs in the SNB group. CONCLUSION: In this not randomized observational study with an average follow-up period of 48.2 months, SNB appear to confer less cost than END, with similar prognosis.
OBJECTIVE: The aim of this prospective not randomized observational study was to determine the costs and outcomes of sentinel lymph node biopsy (SNB) vs elective neck dissection (END) among patients with early oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS: Seventy-three consecutive patients were divided according to neck staging method. Patients took the decision themselves after receiving detailed information of both suggested treatment tools. False negative (FN) and negative predictive value (NPV) were assessed. Log-rank test was used to compare disease-free survival (DFS) and overall survival (OS). Only direct costs were analysed. Cost information derived from volumes for hospital stay, surgery and neck outcome were obtained from an internal database of tertiary health care center. RESULTS: Thirty-two patients underwent SNB and 41 underwent an END (levels I-III). Average follow-up time was 48.2 months (range 7-80). Five neck recurrences were recorded in the SNB group (range 11-21). Seven neck recurrences occurred in the END group (range 9-16). No significant differences were found in DFS or OS. True negative patients in SNB group incurred in 42% less costs than END group. FN regardless of radiotherapy, was also lower in the SNB group. However, pN+ patients generated 23% more costs in the SNB group. CONCLUSION: In this not randomized observational study with an average follow-up period of 48.2 months, SNB appear to confer less cost than END, with similar prognosis.
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