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The Application of 1% Methylene Blue Dye As a Single Technique in Breast Cancer Sentinel Node Biopsy

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Sentinel node identification using microbubbles and contrast-enhanced ultrasonography.

A R Sever¹, P Mills, S E Jones

¹Department of Radiology, Maidstone Hospital, Maidstone, Kent, UK. ali.sever@nhs.net

Clinical Radiology

|January 10, 2012

Summary

This summary is machine-generated.

Sentinel lymph node biopsy is crucial for breast cancer staging. Intradermal microbubble injection with contrast-enhanced ultrasound improves visualization of sentinel lymph nodes in the axilla.

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Area of Science:

Oncology
Radiology
Surgical Pathology

Background:

Sentinel lymph node (SLN) biopsy is the standard for axillary staging in breast cancer.
Current grey-scale ultrasonography (US) for preoperative staging has limited sensitivity.
Accurate SLN identification is critical for staging and treatment planning.

Purpose of the Study:

To review the technique of sentinel lymph node identification using intradermal microbubble injection and contrast-enhanced ultrasound.
To illustrate the potential of microbubbles to visualize SLNs in the axilla.
To provide examples of imaging findings.

Main Methods:

Intradermal injection of US contrast agent (microbubbles) into the breast.
Observation of microbubble transit through breast lymphatics to the axilla.
Utilizing grey-scale and contrast-enhanced US to visualize and identify putative SLNs.

Main Results:

Microbubbles can enter breast lymphatics and rapidly reach the axilla.
Contrast-enhanced US effectively visualizes lymphatic pathways and putative SLNs.
The technique demonstrates potential for improved SLN identification.

Conclusions:

Intradermal microbubble injection combined with contrast-enhanced US is a promising technique for SLN identification.
This method may enhance the sensitivity of preoperative axillary staging in breast cancer patients.
Further research can optimize this technique for clinical application.