Related Experiment Video
Updated: Sep 25, 2025

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Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery
Published on: May 4, 2022
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Missing lung nodule? Intra-operative contingency plan with O-arm imaging: a case report
Rocio Castillo-Larios1, Daniel Hernandez-Rojas1, Breah Paciotti2
1Department of Pulmonary, Allergy, and Sleep Medicine, Mayo Clinic Florida, Jacksonville, FL, USA.
AME Case Reports
|April 27, 2022
Summary
Precise localization of small pulmonary nodules during thoracoscopic surgery is difficult. The O-arm Surgical Imaging System provided real-time 3D imaging, enabling successful resection of a missed lung nodule after two prior attempts.
Area of Science:
- Thoracic Surgery
- Surgical Imaging
- Pulmonary Medicine
Background:
- Minimally invasive thoracoscopic surgery for small, non-palpable pulmonary nodules faces localization challenges.
- Pre-operative localization methods increase time, cost, and complications.
- Intra-operative ultrasound has limitations in visualizing deep lesions and is operator-dependent.
Observation:
- A case report details the use of the O-arm Surgical Imaging System in an 81-year-old male patient with an 8 mm left lower lobe lung nodule.
- Two prior thoracoscopic wedge resections were unsuccessful in resecting the nodule.
- The O-arm system provided immediate 3D imaging feedback within the standard thoracoscopy room.
Findings:
- The O-arm system facilitated the successful resection of the previously missed lung nodule with negative margins.
- This imaging modality allowed for real-time intra-operative assessment, preventing the need for patient repositioning or conversion to thoracotomy.
- The O-arm proved effective in identifying the elusive nodule, avoiding a missed resection.
Implications:
- The O-arm Surgical Imaging System can enhance intra-operative localization accuracy for challenging pulmonary nodules.
- It offers a potential solution to improve success rates in thoracoscopic lung nodule resection.
- This technology can potentially transform standard thoracoscopy suites into hybrid operating rooms for complex cases.

