[CT scanning of the cervical lymph node metastases: compared with histologic sections]

Area of Science:

• Oncology
• Radiology
• Head and Neck Surgery

Background:

• Cervical lymph node metastases are critical for staging head and neck squamous cell carcinoma (HNSCC).
• Preoperative imaging, including MRI and CT, is essential for evaluating nodal involvement, complementing physical examinations.

Purpose of the Study:

• To compare CT scan findings of metastatic lymph nodes with histologic sections.
• To establish criteria for assessing nodal metastases using histologic correlation.
• To determine the diagnostic accuracy of CT in detecting cervical lymph node metastases in HNSCC.

Main Methods:

• Retrospective analysis of 26 dissections comparing CT scans with corresponding histologic sections.
• Pathologic findings served as the gold standard for comparison.
• Evaluation of CT accuracy for nodal disease, extracapsular spread, and central nodal necrosis.

Main Results:

• CT demonstrated high accuracy in detecting nodal disease (93.8% sensitivity, 90.0% specificity, 92.3% accuracy).
• CT achieved 72.7% accuracy in identifying extracapsular nodal spread.
• The accuracy of CT in detecting central nodal necrosis was 88.9%.

Conclusions:

• CT scanning is a highly accurate tool for detecting cervical lymph node metastases in patients with HNSCC.
• CT findings correlate well with pathologic results, supporting its use in preoperative assessment.
• The study validates CT's role in identifying nodal spread and necrosis, crucial for treatment planning.