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Non-Invasive Characterization of Parotid Gland Tumors Using Imaging-Based Techniques.

M G Demirci1, M Akşamoğlu2, M S Menzilcioğlu2

  • 1Department of Radiology, Sanko University Hospital, Gaziantep, Turkey.

Nigerian Journal of Clinical Practice
|May 5, 2026
PubMed
Summary

The long-to-short axis ratio and shear-wave velocity from virtual touch imaging quantification effectively differentiate parotid gland tumors. This non-invasive approach may reduce the need for biopsies.

Keywords:
Elastographyparotid tumorsultrasonography

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Area of Science:

  • Radiology
  • Oncology
  • Medical Imaging

Background:

  • Parotid gland tumors are common head and neck neoplasms.
  • Accurate differentiation is crucial for patient management.
  • Advanced ultrasound techniques like shear-wave elastography (SWE) show diagnostic promise.

Purpose of the Study:

  • To assess the diagnostic performance of L/S ratio and SWV using VTIQ.
  • To differentiate between pleomorphic adenoma (PA), Warthin tumor (WT), and malignant tumors (MT) of the parotid gland.

Main Methods:

  • Included 66 parotid masses from 63 patients.
  • Utilized conventional ultrasound and SWE examinations.
  • Analyzed B-mode features, Doppler patterns, L/S ratios, and SWV values.
  • Performed ROC analysis for optimal cutoff values, sensitivity, and specificity.

Main Results:

  • L/S ratio cutoff of 1.57 differentiated WT and PA (83.33% sensitivity, 88.46% specificity).
  • L/S ratio cutoff of 1.68 distinguished MT from PA (50.00% sensitivity, 96.15% specificity).
  • SWV cutoff of 5.02 m/s differentiated WT and PA (91.67% sensitivity, 73.08% specificity).
  • SWV cutoff of 6.30 m/s differentiated MT from PA (84.62% sensitivity, 62.50% specificity).

Conclusions:

  • Combined L/S ratio and SWV via VTIQ offer a reliable non-invasive method for parotid tumor differentiation.
  • This approach may decrease the necessity for invasive biopsies.