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Related Experiment Video

Updated: Jan 28, 2026

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Latest update about virtual-assisted lung mapping in thoracic surgery.

Kentaro Kitano1, Masaaki Sato1

  • 1Department of Thoracic Surgery, The University of Tokyo Hospital, Tokyo, Japan.

Annals of Translational Medicine
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PubMed
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Virtual-assisted lung mapping (VAL-MAP) is a safe endoscopic technique for locating lung nodules. Combining VAL-MAP with microcoils may improve surgical margin success in pulmonary resections.

Keywords:
Virtual-assisted lung mapping (VAL-MAP)ground glass nodule (GGN)localizationlung cancer

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Area of Science:

  • Pulmonology
  • Thoracic Surgery
  • Medical Imaging

Background:

  • Virtual-assisted lung mapping (VAL-MAP) is a preoperative bronchoscopic dye-marking technique aiding navigational lung resections.
  • VAL-MAP is effective for pulmonary sublobar resections, particularly for non-palpable lesions like ground glass nodules (GGNs).
  • The technique may reduce surgical time for wedge resections and potentially eliminate the need for post-mapping CT scans with electromagnetic navigation bronchoscopy (ENB).

Purpose of the Study:

  • To evaluate the efficacy of conventional VAL-MAP in achieving adequate surgical margins for pulmonary sublobar resections.
  • To assess the successful resection rate in a multicenter prospective study.
  • To explore potential improvements for VAL-MAP in future applications.

Main Methods:

  • A multicenter prospective single-arm study was conducted.
  • Virtual-assisted lung mapping (VAL-MAP) was employed as a preoperative bronchoscopic multi-spot dye-marking technique.
  • Surgical outcomes, including margin adequacy and resection rates, were analyzed.

Main Results:

  • Conventional VAL-MAP demonstrated reasonable efficacy in achieving good surgical margins.
  • The primary goal for the successful resection rate was not met, primarily due to challenges with deep resection margins.
  • The study identified areas for improvement in the VAL-MAP technique.

Conclusions:

  • VAL-MAP is a safe and effective tool for pulmonary sublobar resections, especially for small, non-palpable nodules.
  • Improvements are needed to address deep resection margins to increase successful resection rates.
  • Combining VAL-MAP with microcoils is proposed as a future strategy to enhance surgical margin acquisition.