title: Quantitative analysis of lymph nodes in neck dissection specimens. Morphologic study.
abstract: OBJECTIVE
  To quantify the amount of lymph nodes harvested in modified radical neck dissection.
  
  
  METHODS
  Cross-sectional anatomical study conducted in 28 non-preserved cadavers.
  
  
  RESULTS
  The mean number of lymph nodes found in each nodal level of the 56 modified radical neck dissections performed were: level IA - 1.5 (95% CI: 1.1 - 1.8), level IB - 2.5 (95% CI: 2.1 - 2.9), level IIA - 7.2 (95% CI: 6.0 - 8.5), IIB level - 6.5 (95% CI: 5.5 - 7.4), level III - 6.6 (95% CI: 5.7 - 7.4), level IV - 8.6 (95% CI: 7.1 - 10.1), level V - 11 (95% CI: 9.2 - 12.7), totalizing 43.8 lymph nodes (95% CI: 40.3 - 47.4).
  
  
  CONCLUSIONS
  The results defined a parameter in relation to the minimum recommended nodal yield in a modified radical neck dissection, as well as the number of lymph nodes in each level of this dissection, performed in clinical practice.
authors.affiliation: MD, Department of Head and Neck Surgery, School of Medicine, Universidade de São Paulo (USP), Sao Paulo-SP, Brazil. Analysis of data, manuscript writing, design and supervise all phases of the study.
authors.forename: Fábio de Aquino
authors.initials: Fde A
authors.lastname: Capelli
authors.affiliation: MD, Department of Pathology, School of Medicine, USP, Sao Paulo-SP, Brazil. Analysis of data, histopathological examinations, design and supervise all phases of the study.
authors.forename: Vitor Ribeiro
authors.initials: VR
authors.lastname: Paes
authors.affiliation: Graduate student, School of Medicine, USP, Sao Paulo-SP, Brazil. Acquisition of data.
authors.forename: Mariangela Marinheiro
authors.initials: MM
authors.lastname: Machado
authors.affiliation: Graduate student, School of Medicine, USP, Sao Paulo-SP, Brazil. Acquisition of data.
authors.forename: Camila Lohmann
authors.initials: CL
authors.lastname: Menezes
authors.affiliation: Graduate student, School of Medicine, USP, Sao Paulo-SP, Brazil. Acquisition of data.
authors.forename: Pablo Rodrigo Andrade da
authors.initials: PR
authors.lastname: Silva
authors.affiliation: PhD, Department of Pathology, School of Medicine, USP, Sao Paulo-SP, Brazil. Design and supervise all phases of the study.
authors.forename: Sheila Aparecida Coelho
authors.initials: SA
authors.lastname: Siqueira
authors.affiliation: PhD, Chairman, Full Professor, Department of Pathology, School of Medicine, USP, Sao Paulo-SP, Brazil. Design and supervise all phases of the study.
authors.forename: Venâncio Avancini Ferreira
authors.initials: VA
authors.lastname: Alves
authors.affiliation: PhD, Assistant Professor, Department of Head and Neck Surgery, School of Medicine, USP (LIM 28) and Instituto do Câncer do Estado de São Paulo (ICESP), Brazil. Analysis of data, manuscript writing, critical revision, design and supervise all phases of the study.
authors.forename: Leandro Luongo
authors.initials: LL
authors.lastname: Matos
authors.affiliation: PhD, Associate Professor, Head Division, Department of Head and Neck Surgery, School of Medicine, USP, Sao Paulo-SP, Brazil. Critical revision, design and supervise all phases of the study.
authors.forename: Claudio Roberto
authors.initials: CR
authors.lastname: Cernea
mesh_terms: D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009333:Neck; D037981:Neck Dissection / Q000379:methods*