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Updated: Jul 14, 2026
Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery
Published on: May 4, 2022
Radiofrequency Identification Marker-Guided Right S7 Segmentectomy for a Deeply Located Pulmonary Nodule: A Case
Taichi Matsubara1,2, Fumihiko Kinoshita1,2, Naoya Iwamoto2
1Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Fukuoka, Japan.
Introduction:
The right S7 segment is the smallest pulmonary segment. Securing an adequate surgical margin during S7 segmentectomy can be challenging, particularly when the tumor is located more centrally. Radiofrequency identification (RFID) marking systems provide substantial benefits in detecting small nodules as well as ensuring an adequate resection margin from the marking site.
Case Presentation:
A 67-year-old man with a history of renal cell carcinoma was referred to Kyushu University Hospital with a 9-mm solid nodule located deep within the right S7 segment. Given its central and deep location, preoperative RFID marker placement was performed in a hybrid operating room under cone-beam CT guidance. Subsequently, thoracoscopic S7 segmentectomy was performed using a confronting upside-down video-assisted thoracoscopic surgery approach. The RFID probe enabled precise intraoperative localization of the tumor and continuous confirmation of its surgical margin from the intersegmental plane. Pathological examination revealed papillary adenocarcinoma and confirmed complete resection. The patient's postoperative course was uneventful.
Conclusions:
RFID represents a valuable adjunct for segmentectomy of deeply or centrally located pulmonary nodules.
