Value of diffusion-weighted MR imaging performed with quantitative apparent diffusion coefficient values for cervical...

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Cervical lymphadenopathy diagnosis often requires invasive procedures.
• Accurate differentiation between benign and malignant lymph nodes is crucial for patient management.

Purpose of the Study:

• To evaluate the efficacy of diffusion-weighted magnetic resonance imaging (DWI-MRI) using apparent diffusion coefficient (ADC) values in detecting cervical lymphadenopathy.
• To assess if DWI-MRI can distinguish between malignant, lymphomatous, and benign cervical lymph nodes.

Main Methods:

• A systematic literature search was conducted across multiple databases (MEDLINE, EMBASE, Cancerlit, Cochrane Library) from January 1995 to November 2010.
• Node-based data analyses and Cochrane methodology were employed for this meta-analysis.
• Eight studies involving 229 individuals were included.

Main Results:

• Significant differences in mean ADC values were observed between malignant and benign cervical lymph nodes (WMD: 1.19 × 10⁻³ mm²/s).
• Distinct differences were also found between lymphomatous nodes and benign nodes (WMD: 1.33 × 10⁻³ mm²/s).
• ADC values varied significantly based on cancer differentiation, distinguishing highly/moderately differentiated cancers (WMD: 0.24 × 10⁻³ mm²/s) from poorly differentiated cancers (WMD: 0.10 × 10⁻³ mm²/s).

Conclusions:

• Diffusion-weighted MRI with ADC values demonstrates significant capability in differentiating malignant, lymphomatous, and benign cervical lymph nodes.
• DWI-MRI offers a non-invasive method for characterizing cervical lymphadenopathy.