Preoperative computed tomography-guided coil localization for multiple lung nodules

Preoperative computed tomography-guided localization for pulmonary nodules: a randomized controlled trial of coil and anchored needle localization

Introduction

In patients with pulmonary nodules (PNs), computed tomography (CT)-guided localization is commonly performed prior to the resection of these nodules through video-assisted thoracic surgery (VATS).

Aim

To evaluate the relative clinical efficacy of coil and anchored needle (AN) insertion as approaches to preoperative CT-guided PN localization.

Material and methods

This single-center, prospective, open-label, randomized controlled trial (registration number: NCT05183945) enrolled consecutive patients from January 2022 to July 2022, assigning these patients at random to undergo either coil or AN localization prior to VATS. Efficacy and safety outcomes in these two groups were then compared.

Results

This study enrolled in total 100 patients with 120 PNs who were assigned at random to the coil (patients = 50; PNs = 60) and AN (patients = 50; PNs = 60) localization groups. The respective technical success rates for coil and AN localization were 98.3% (59/60) and 100% (60/60), with no significant difference between the groups (p = 1.000). The coil group had a significantly longer median duration of localization relative to the AN group (16.0 min vs. 8.0 min, p < 0.001). Similar rates of localization-related pneumothorax (8.3% vs. 5.0%, p = 0.715) and pulmonary hemorrhage (5.0% vs. 13.3%, p = 0.110) were observed in both groups. In addition, the VATS resection procedures achieved 100% technical success rates in both of these localization groups.

Conclusions

Both coil- and AN-based localization approaches can be successfully employed to localize PNs prior to VATS resection, with the AN localization procedure requiring less time to complete on average as compared to the coil-based approach.

Safety and effectiveness of simultaneous localization of multiple lung nodules using coils and risk factors for pneumothorax: a retrospective study

BACKGROUND

Localization of lung nodule before video-assisted thoracoscopic surgery (VATS) can help the surgeon to quickly and accurately find the lesion during surgery.

PURPOSE

To evaluate the safety and effectiveness of using coils to simultaneously locate multiple lung nodules under computed tomography guidance and to clarify the risk factors for pneumothorax.

MATERIAL AND METHODS

From January 2020 to December 2020, 61 patients underwent simultaneous localization of multiple lung nodules (Group A) and 120 patients underwent localization of a single lung nodule (Group B). The demographics, information related to localization procedure, and incidence of pulmonary hemorrhage and pneumothorax were compared between the patients in Groups A and B. Group A was further divided into a pneumothorax group and non-pneumothorax group. Univariate and multivariate regression analyses were used to determine the risk factors for pneumothorax in patients who underwent simultaneous localization of multiple lung nodules using coils.

RESULTS

The success rates in Groups A and B were 96.9% and 96.7%, respectively (P = 1.000). The number of pleural punctures (P<0.001), the positioning operation time (P<0.001), the rates of pneumothorax (P<0.001), and hemorrhage (P = 0.034) were higher in Group A than in Group B. The pneumothorax and bleeding in Group A did not require special treatment. Transfissural puncture (odds ratio [OR]=16.798; P = 0.033) and the numbers of pleural punctures (OR=2.437; P = 0.013) were independent risk factors for pneumothorax caused by simultaneous localization of multiple lung nodules, and hemorrhage was a protective factor against pneumothorax (OR=0.069; P = 0.002).

CONCLUSION

Simultaneous localization of multiple lung nodules using coils under computed tomography guidance is safe and effective. Transfissural puncture and higher numbers of pleural punctures will increase the risk of pneumothorax, whereas hemorrhage will reduce the risk of pneumothorax.

Preoperative computed tomography-guided localization for multiple lung nodules: a Meta-analysis

PURPOSE

Approximately 20% of patients with lung nodules (LNs) have multiple LNs (MLNs). This meta-analysis was performed to assess the safety and efficacy of computed tomography (CT)-guided localization of MLNs in comparison with those of single LN (SLN) localization.

MATERIAL AND METHODS

The PubMed, Embase, and Cochrane Library were searched to collect relevant articles published till February 2022. The meta-analysis was performed using the RevMan v5.3.

RESULTS

In total, seven studies met the inclusion criteria for this meta-analysis. No significant difference was observed between patients with MLNs and SLN in terms of pooled successful localization rate based on LNs (p = 0.64) and patients (p = 0.06). The pooled duration of localization was significantly shorter and the pooled pneumothorax and lung hemorrhage rates were significantly lower in the SLN group than in the MLNs group (p < 0.00001 for all). The pooled duration of hospital stay was comparable between the MLNs and SLN groups (p = 0.96). Significant heterogeneity was observed in the endpoints of duration of localization (I² = 75%) and pneumothorax (I² = 53%).

CONCLUSIONS

CT-guided simultaneous MLN localization is clinically safe and effective, despite requiring a longer procedural time and having higher incidence of pneumothorax and lung hemorrhage than SLN localization.

Simultaneous Patent Blue Dye Injections Aid in the Preoperative CT-Guided Localization of Multiple Pulmonary Nodules

Background and Objectives: Clinically, a major challenge of multiple nodule localization is puncture-related pneumothorax, which may hamper the successful localization. This study aims to investigate and compare the efficacy and safety of the simultaneous and sequential patent blue dye (PBD) injections for identifying multiple pulmonary nodules during preoperative CT-guided localization. Materials and Methods: Sixty-one consecutive patients with multiple pulmonary nodules who underwent preoperative CT-guided localization with PBD injections between January 2020 and December 2020 were retrospectively enrolled. Of these patients, 31 patients with 64 nodules who underwent simultaneous injections were designated as the simultaneous group; the remaining 30 patients with 63 nodules who underwent sequential punctures were designated as the sequential group. The clinical and radiological features, technical information, pathological results, and procedure-related variables and complications of the two groups were reviewed and analyzed. Results: The localization success rate of the simultaneous group was higher than that of the sequential group (100% [64/64] vs. 93.7% [59/63], p = 0.041). The incidences of pneumothorax (32.3 vs. 33.3%, p = 0.929) and pulmonary hemorrhage (6.3 vs. 3.0%, p = 1) were not significantly different between the two groups, and all cases were minor, which did not require further intervention. Additionally, a significantly lower radiation dose (2.7 vs. 3.5 mSv, p = 0.001) and a shorter procedure time (20.95 vs. 25.28 min, p = 0.001) were observed in the simultaneous group than in the sequential group. Conclusions: Compared with the sequential method, simultaneous PBD injections may improve the localization success rate with a shorter procedure time and less radiation exposure if the patient with multiple pulmonary nodules can be approached in a single position. Further prospective studies are needed to validate these results.

Computed tomography-guided localization for multiple pulmonary nodules: a meta-analysis

Introduction

Preoperative computed tomography (CT)-guided localization is commonly employed to facilitate video-assisted thoracoscopic surgery (VATS)-guided diagnostic wedge resection of pulmonary nodules (PNs).

Aim

The present meta-analysis was conducted with the goal of better evaluating the feasibility, safety, and clinical efficacy of preoperative CT-guided localization for multiple PNs (MPNs).

Material and methods

PubMed, Embase, and the Cochrane Library databases were reviewed in order to identify all relevant studies published as of June 2020. Random effects modeling was then used to evaluate the pooled data. The meta-analysis was conducted using Stata v12.0 software.

Results

Eight relevant studies were identified for inclusion in the present meta-analysis. In total, 345 patients with 799 PNs were treated with preoperative CT-guided localization and subsequent wedge resection. The overall pooled technical success rate based on the nodules and patients was calculated to be 97% (95% confidence interval (CI): 0.94-0.99) and 92% (95% CI: 0.86-0.97), respectively. The overall pooled incidence rate of complications was calculated to be 40% (95% CI: 0.16-0.63). Significant heterogeneity was observed among the studies for all the parameters described above (I² = 74.5%, 77.7%, and 96.3%, respectively). No significant differences were detected in the technical success of localization and incidence of complications between coil and hook-wire groups. The risk of publication bias in the reporting of technical success rate of localization based on both nodules and patients was found to be high (p < 0.001 and < 0.001, respectively).

Conclusions

Preoperative CT-guided localization may be effective in guiding VATS-guided wedge resection in patients with MPNs.

Preoperative computed tomography-guided coil localization of sub-centimeter lung nodules

Introduction

Lung nodules (LNs) are often identified in at-risk patients via low-dose computed tomography (CT) approaches. Sub-centimeter (≤ 1 cm) LNs (SCLNs) are particularly difficult for surgeons and pathologists to accurately treat and diagnose.

Aim

To evaluate the clinical efficacy of preoperative CT-guided coil localization for SCLNs.

Material and methods

Between January 2015 and December 2019, consecutive patients at our hospital with SCLNs underwent CT-guided coil localization followed by video-assisted thoracoscopic surgery (VATS). We then assessed rates of technical success corresponding to the localization and VATS-guided wedge resection procedures and measured rates of localization-related complications.

Results

In total, 52 patients were analyzed in this study, with 66 total SCLNs being localized with one coil each. CT-guided coil localization achieved a 93.9% (62/66) technical success rate, and a mean duration of 15.2 ±4.5 minutes. Following coil localization, 6 (11.5%) patients experienced pneumothorax and 4 (7.7%) patients suffered hemoptysis, with 1 patient requiring the insertion of a chest tube to alleviate pneumothorax. VATS-guided wedge resection was associated with a 100% technical success rate, and no patients needed to undergo conversion to thoracotomy. One-stage VATS-guided wedge resection was conducted in the 12 patients with multiple SCLNs. The mean VATS duration was 128.9 ±66.7 minutes, and mean blood loss associated with this procedure was 83.0 ±67.7 ml.

Conclusions

Preoperative CT-guided coil localization can safely and effectively achieve high rates of success when conducting the diagnostic VATS wedge resection of SCLNs.

Single-Stage Pulmonary Resection via a Combination of Single Hookwire Localization and Video-Assisted Thoracoscopic Surgery for Synchronous Multiple Pulmonary Nodules

Purpose: To retrospectively analyze the incidence and predictors of complications related to hookwire localization in patients with single and multiple nodules, and to evaluate the usefulness of a single-stage surgical method of single hookwire localization combined with video-assisted thoracoscopic surgery (VATS) in synchronous multiple pulmonary nodules (SMPNs). Methods: A total of 200 patients who underwent computed tomography (CT)-guided hookwire localization and subsequent VATS resection were enrolled in this study. For each patient, only 1 indeterminate nodule was implanted with a hookwire. There were 145 patients in the single-nodule group (Group S) and 55 in the multiple-nodule group (Group M). Univariate and binary logistic regression analyses were used to assess incidence and predictors of complications associated with hookwire localization. Results: The technical success rate of hookwire implantation was 97.5%. The incidence of pneumothorax and hookwire dislodgement was 17.0% and 2.5%, respectively. Binary logistic regression analysis showed that 1 transpleural puncture through the pleura (odds ratio [OR] = 0.433, P = .033) was the only independent protective factor for pneumothorax, and pneumothorax (OR = 26.114, P < .01) was the only independent risk factor for dislodgement. The volume of blood loss during VATS was significantly higher in group M than in group S, and the time of postoperative hospitalization was significantly longer in group M than in group S. About 44 patients in group M with additional 58 nodules without localization had undergone direct surgical resection simultaneously, and bilateral surgery was performed in 13 patients (29.5%). The intrathoracic recurrence rate was 4.8% during follow-up CT. Conclusion: Single-stage surgery via an approach of single hookwire localization combined with VATS is feasible and safe for SMPNs.

Trans-scapular approach coil localization for scapular-blocked pulmonary nodules: a retrospective study

BACKGROUND

Preoperative computed tomography (CT)-guided coil localization (CL) is commonly used to facilitate video-assisted thoracoscopic surgery (VATS)-guided diagnostic wedge resection (WR) of pulmonary nodules (PNs). When a scapular-blocked PN (SBPN) is localized, the trans-scapular CL (TSCL) is commonly performed. In this study, we investigated the safety, feasibility, and clinical efficacy of preoperative CT-guided TSCL for SBPNs.

MATERIALS AND METHODS

From January 2014 to September 2020, a total of 152 patients with PNs underwent CT-guided CL prior to VATS-guided WR. Of these patients, 14 had SBPNs and underwent the TSCL procedure.

RESULTS

A total of 14 SBPNs were localized in the 14 patients. The mean diameter of the 14 SBPNs was 7.4 ± 2.4 mm. The technical success rate of the scapula puncture was 100%. No complications occurred near the scapula. The technical success rate of CL was 92.9%. One coil dropped off when performing the VATS procedure. The mean duration of the TSCL was 14.2 ± 2.7 min. Two patients (14.3%) developed asymptomatic pneumothorax after TSCL. The technical success rate of VATS-guided WR was 92.9%. The patient who experienced technical failure of TSCL directly underwent lobectomy. The mean duration of the VATS was 90.0 ± 42.4 min and the mean blood loss was 62.9 ± 37.2 ml. The final diagnoses of the 14 SBPNs included invasive adenocarcinoma (n = 4), adenocarcinoma in situ (n = 9), and benign disease (n = 1).

CONCLUSIONS

Preoperative CT-guided TSCL is a safe and simple procedure that can facilitate high success rates of VATS-guided WR of SBPNs.

Computed tomography-guided coil localization for scapula-blocked pulmonary nodules: A trans-scapular approach

To evaluate the clinical efficiency, feasibility, and safety of computed tomography (CT)-guided trans-scapular coil localization (TSCL) approach to treating scapula-blocked pulmonary nodules (SBPNs).In total, 105 patients with pulmonary nodules underwent CT-guided CL and subsequent video-assisted thoracoscopic surgery (VATS)-guided wedge resection (WR) between January 2016 and July 2020. Six of these patients (5.7%) had SBPNs that led them to undergo CT-guided TSCL. Rates of technical success and localization-related complications were then recorded and analyzed.CT-guided TSCL was associated with a 100% technical success rate, with one coil being placed per patient. The median CT-guided TSCL duration was 15 min. No patients experienced any complications associated with this procedure, and subsequent VATS-guided WR of SBPNs was 100% technically successful. In two patients with invasive adenocarcinoma, additional lobectomy was performed. Median VATS duration and intraoperative blood loss were 120 min and 150 mL, respectively.In summary, these results indicate that CT-guided TSCL could be easily and safely implemented to achieve high success rate when performing the VATS-guided WR of SBPNs.