Breast cancer angiogenesis: a quantitative morphologic and Doppler imaging study

Area of Science:

• Oncology
• Radiology
• Pathology

Background:

• Tumor growth and metastasis depend on angiogenesis, the formation of new blood vessels.
• Microvessel count via immunocytochemistry assesses angiogenesis and predicts patient outcomes.
• Color Doppler mapping detects tumor vascularization, offering a non-invasive method to evaluate breast lesions.

Purpose of the Study:

• To investigate the correlation between tumor vascularization assessed by color Doppler mapping and angiogenesis measured by microvessel count in breast cancer.
• To determine the clinical significance of tumor flow velocity in relation to clinicopathologic factors.

Main Methods:

• Eighty-four patients undergoing breast surgery were preoperatively assessed using color Doppler mapping for vessel location, signal density, and maximum systolic velocity.
• Tumor angiogenesis was quantified by microvessel count using CD31 antibody staining.
• Correlation analysis was performed between Doppler parameters and microvessel counts, and associations with clinicopathologic factors were examined.

Main Results:

• Color Doppler signals were detected in 92% of malignancies and 31% of benign lesions, primarily at the periphery.
• No significant correlation was found between color Doppler parameters (signal intensity, velocity) and microvessel counts.
• Higher tumor flow velocity in early-stage (T1) breast tumors was associated with axillary lymph node metastases (p < 0.05).

Conclusions:

• Color Doppler mapping is valuable for differentiating benign from malignant breast lesions.
• Tumor flow velocity and signal intensity do not correlate with the extent of angiogenesis in breast cancer.
• High tumor flow signals in early breast cancer are a significant indicator of lymph node metastasis presence.