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Related Experiment Videos

Selective neck dissection: CT and MR imaging findings.

Patricia A Hudgins1, Todd T Kingdom, Mark C Weissler

  • 1Department of Radiology, Emory University School of Medicine, Atlanta, GA 30322, USA.

AJNR. American Journal of Neuroradiology
|May 14, 2005
PubMed
Summary

Selective neck dissection (SND) alters deep cervical fat and sternocleidomastoid muscle appearance on CT/MR imaging. Post-SND imaging commonly shows decreased fat, muscle changes, and potential internal jugular vein thrombosis.

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Area of Science:

  • Head and Neck Radiology
  • Surgical Oncology Imaging
  • Oncologic Imaging

Background:

  • Selective neck dissection (SND) is a key procedure for managing head and neck cancer metastasis.
  • SND aims to remove cancerous lymph nodes while preserving function.
  • Understanding post-SND imaging is crucial for accurate interpretation.

Purpose of the Study:

  • To detail the expected CT and MR imaging findings following selective neck dissection (SND).
  • To correlate imaging findings with the surgical procedure of SND.

Main Methods:

  • Retrospective review of CT/MR images from 27 patients undergoing SND.
  • Radiologists assessed deep cervical fat, internal jugular vein (IJV) patency, and muscle changes (SCM, trapezius, infrahyoid).
  • Presence of the submandibular gland was also noted.

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Main Results:

  • Marked decrease in deep cervical fat was observed in most cases.
  • Sternocleidomastoid (SCM) muscle changes (asymmetry, flattening, atrophy) were common.
  • Internal jugular vein (IJV) non-visualization or absence of the submandibular gland occurred in a significant proportion of patients.

Conclusions:

  • Post-SND imaging findings are characteristic of the surgical intervention.
  • Absence of the submandibular gland indicates Level I node removal.
  • Observed changes in fat, muscles, and IJV reflect the extent and nature of SND.