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Related Experiment Videos

Quantification of lymph nodes in selective neck dissection.

M Friedman1, J W Lim, W Dickey

  • 1Department of Otolaryngology, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612-3833, USA.

The Laryngoscope
|March 25, 1999
PubMed
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Selective neck dissection yields comparable lymph node counts to radical neck dissection when surgical boundaries are maintained. Cadaver dissections offer a reference but may underestimate node counts in diseased states.

Area of Science:

  • Anatomy
  • Surgical Pathology
  • Oncology

Background:

  • Accurate lymph node yield is crucial for staging head and neck cancers.
  • Selective neck dissection (SND) aims to balance oncologic control with reduced morbidity.
  • Establishing expected lymph node counts for SND is essential for surgical and pathological reference.

Purpose of the Study:

  • To provide surgeons and pathologists with expected lymph node yield data for selective neck dissections.
  • To quantify lymph nodes harvested from cadaver dissections based on nodal classification.
  • To compare cadaveric findings with lymph node counts from clinical neck dissection series.

Main Methods:

  • Lymph nodes were quantified at levels I-V from 20 radical neck dissection specimens from cadavers.

Related Experiment Videos

  • Cadaveric nodes were correlated with supraomohyoid (levels I-III) and lateral (levels II-IV) neck dissection groupings.
  • A retrospective review of 98 clinical neck dissection specimens was conducted to determine lymph node quantity.

    • Main Results:

    • Cadaver dissections yielded an average of 24 lymph nodes (levels I-V), 13 (levels I-III), and 19 (levels II-IV).
    • Clinical supraomohyoid dissections averaged 20 nodes (range, 14-26).
    • Clinical lateral compartment dissections averaged 30 nodes (range, 15-43), and radical/modified radical dissections averaged 31 nodes (range, 19-63).

    Conclusions:

    • Selective neck dissection lymph node yield should mirror that of corresponding levels in radical neck dissection if surgical boundaries are strictly followed.
    • Cadaveric dissection provides a valuable reference for lymph node quantity.
    • Cadaveric studies may underrepresent lymph node yield compared to diseased clinical specimens.