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Light-guided lumpectomy: first clinical experience.

Amanda Dayton¹, Laurel Soot, Ronald Wolf

¹Department of Biomedical Engineering, Oregon Health & Science University, Portland, Oregon, USA.

Journal of Biophotonics

|September 30, 2011

Summary

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Light-guided lumpectomy uses a novel optical wire and laser to illuminate non-palpable breast cancers. This technique aids surgeons in specimen retrieval, improving margin status in breast-conserving surgery.

Area of Science:

Oncology
Surgical Innovation
Medical Devices

Background:

Lumpectomy, a breast-conserving surgery, presents challenges, particularly for non-palpable tumors.
Accurate tumor localization and complete excision are critical for successful outcomes and minimizing recurrence.
Existing localization methods, like hook-wires, can be difficult to precisely follow during surgery.

Purpose of the Study:

To evaluate the early feasibility and preliminary outcomes of a novel light-guided lumpectomy technique.
To assess the safety and ease of integration of this new method into standard surgical procedures.
To determine the impact of light-guided lumpectomy on achieving clear surgical margins.

Main Methods:

A prospective study involving eight patients with biopsy-proven, non-palpable breast cancer.

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Development and use of a specialized optical wire combining a hook-wire with an optical fiber.

Illumination of the optical wire with an eye-safe laser to create a visible light "sphere" around the tumor during surgery.

Surgical dissection guided by the visible light sphere to ensure complete tumor removal.

Main Results:

The light-guided system successfully illuminated the tumor site, aiding surgical approach and specimen orientation.
Initial lumpectomy specimens from three of eight patients had focally positive margins.
Additional cavity shavings in five patients led to negative margins in seven of eight cases.
The technique was easily incorporated into clinical practice with no reported adverse events.

Conclusions:

Light-guided lumpectomy represents a minor, easily adoptable modification to breast-conserving surgery.
The technique shows promise in improving tumor localization and potentially enhancing margin status.
Further research is warranted to fully establish the clinical benefits and long-term efficacy of light-guided lumpectomy.