scholarly journals Preoperative Small Pulmonary Nodule Localisation Using Hookwires or Coils: Strategy Selection in Adverse Events

Author(s):  
Tao Zuo ◽  
Zhaoming Gao ◽  
Bing Wen ◽  
Baojun Chen ◽  
Zhenfa Zhang

Abstract Objective We conducted a retrospective study of adverse events associated with the preoperative procedure of computed tomography (CT)–guided hookwire or coil localisation. We analysed the experience of and process flaws in resecting ground-glass nodules (GGNs) using video-assisted thoracoscopic surgery (VATS) and determined the remedial strategy. Methods Adverse events were evaluated in 20 patients with 25 GGNs who underwent CT-guided hookwire or coil localisation before VATS. For lesions not successfully marked or detected, palpation, resection of the highly suspected area, segmentectomy or lobectomy was performed. Results Among all adverse events, 10 were dislodgement of the marking materials, 2 were breakaway of the marking materials, 4 were >2-cm distance between the lesions and the tip, one was marking material across the two adjacent lobes, 10 were pneumothorax and two were certain parts of marking materials stuck into the walls. All GGNs were resected successfully. Fifteen lesions were detected by palpation. Three GGNs were discovered after the resection of highly suspected areas. The GGNs were removed by lobectomy. Segmentectomies and lobectomies were performed directly on two and four GGNs, respectively. Conclusions When adverse events occur, a second localisation, intraoperative localisation, resection of a highly suspected area, or a segmentectomy or lobectomy can be successfully attempted using VATS for resection of GGNs.

Author(s):  
Jian-Hua Zhang ◽  
Shi-Qing Zhou ◽  
Feng-Fei Xia ◽  
Tao Wang

Abstract Background The aim of the study is to evaluate the feasibility, safety, and effectiveness of preoperative computed tomography (CT)-guided trans-scapular coil localization (TSCL) of scapula-blocked pulmonary nodules (PNs). Methods Between November 2015 and May 2020, 11 patients underwent preoperative CT-guided TSCL procedures owing to PN occlusion by scapula. Results A 100% technical success rate was achieved for CT-guided TSCL, with one coil being used for each PN. One patient (9.1%) developed pneumothorax. Successful video-assisted thoracoscopic surgery (VATS)-guided wedge resection of these scapula-blocked PNs was conducted in all patients. Conclusion CT-guided TSCL can be simply and safely used to facilitate successful VATS-guided wedge resection of scapula-blocked PNs.


2020 ◽  
Vol 93 (1111) ◽  
pp. 20190956 ◽  
Author(s):  
Junzhong Liu ◽  
Xinhua Wang ◽  
Yongming wang ◽  
Minfeng Sun ◽  
Changsheng Liang ◽  
...  

Objective: To compare two kinds of metal markers for preoperative localization of ground glass nodules (GGNs). Methods: We retrospectively investigated data from 198 cases of GGN localization and compared the success rate and complications of both approaches. Results: In the hook wire and coil groups, the success rates of CT-guided localization for GGNs were 99.2 and 98.7%, respectively (p = 1.000). The success rates of video-assisted thoracoscopic surgery in both groups were 100% without transthoracic surgery. The post-localization complication rates in the hook wire group and coil group were 36.9 and 32.9% (p = 0.568), and the postoperative complication rates in the hook wire and coil groups were 13.9 and 11.8%, respectively (p = 0.672). Conclusions: Preoperative localization of GGNs with both hook wire and coil methods proved to be useful and effective. Both methods have acceptable preoperative and postoperative complication rates, but the localization and operation times were shorter for the hook wire group than the coil group. Advances in knowledge: Most of previous articles studied a single preoperative localization method. Few studies have compared the preoperative and postoperative methods for metal markers. This paper compared two preoperative localization methods for GGNs to provide clinical guidance.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dayeong Hong ◽  
HaeKang Kim ◽  
Taehun Kim ◽  
Yong-Hee Kim ◽  
Namkug Kim

AbstractHerein, realistic and reusable phantoms for simulation of pediatric lung video-assisted thoracoscopic surgery (VATS) were proposed and evaluated. 3D-printed phantoms for VATS were designed based on chest computed tomography (CT) data of a pediatric patient with esophageal atresia and tracheoesophageal fistula. Models reflecting the patient-specific structure were fabricated based on the CT images. Appropriate reusable design, realistic mechanical properties with various material types, and 3D printers (fused deposition modeling (FDM) and PolyJet printers) were used to represent the realistic anatomical structures. As a result, the phantom printed by PolyJet reflected closer mechanical properties than those of the FDM phantom. Accuracies (mean difference ± 95 confidence interval) of phantoms by FDM and PolyJet were 0.53 ± 0.46 and 0.98 ± 0.55 mm, respectively. Phantoms were used by surgeons for VATS training, which is considered more reflective of the clinical situation than the conventional simulation phantom. In conclusion, the patient-specific, realistic, and reusable VATS phantom provides a better understanding the complex anatomical structure of a patient and could be used as an educational phantom for esophageal structure replacement in VATS.


2020 ◽  
Author(s):  
Huijun Zhang ◽  
Ying Li ◽  
Nadier Yimin ◽  
Zelai He ◽  
Xiaofeng Chen

Abstract Objectives: Video assisted thoracoscopic surgery (VATS) can currently be used to diagnose and treat pulmonary nodules. However, intraoperative location of pulmonary nodules in VATS is challenging due to their small diameter and deep location in the pulmonary parenchyma. The purpose of this study was to report the clinical safety and effectiveness of CT-guided hook-wire for preoperative localization of malignant pulmonary nodules smaller than 1 cm in diameter.Methods: From February 2017 to January 2018, we collected the data of 80 patients with malignant pulmonary nodules less than 1 cm in diameter who underwent CT-guided hook-wire preoperative localization and VATS surgery. The effectiveness of preoperative localization was evaluated based on surgical duration, success rate of VATS surgery, and localization-related complications.Results: The diameter of pulmonary nodules were 0.85 ± 0.17 mm with a distance to the pleural surface of 19.66 ± 14.10 mm. The length of the hook-wire in the lung parenchyma was 29.17 ± 13.14 mm and hook-wire dislodgement occurred in 2 patients. Complications included 27 cases of minor pneumothorax and 18 cases of mild parenchymal hemorrhage. A significant correlation was observed between the length of the hook-wire in the lung parenchyma and mild parenchymal hemorrhage (P = 0.044). The average time of hook-wire localization was 9.0 ± 2.6 min and the average operation time for VATS was 89.02 ± 23.35 min without conversion thoracotomy.Conclusions: CT-guided hook-wire localization of the lesion during VATS resection is safe for malignant pulmonary nodules with diameter less than 1 cm.


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