Dataset Information

Computed tomography detection of stapled interlobar fissure facilitates diagnosing postoperative lobar torsion: A case report.

ABSTRACT:

Introduction

Atelectasis of the right middle lobe following right upper lobectomy may result from lobar torsion, bronchial kink, or impacted mucus plug. Although clinical consequence of lobar torsion could be serious, differentiating it from bronchial kink is occasionally challenging.

Presentation of case

A 39-year old man with non-small cell lung cancer of cT1aN0M0 stage IA underwent right upper lobectomy. On postoperative day 1, we identified middle lobe atelectasis on the chest X-ray and performed bronchoscopy, which showed an obstruction of the right middle lobe bronchus without mucoid impaction. We injected air using a bronchoscope to the middle lobe, which re-expanded it. However, on postoperative day 2, chest X-ray showed a slightly collapsed and opacified middle lobe. Although enhanced computed tomography showed a patent middle lobe pulmonary artery, we noticed that a staple placed in the horizontal fissure was in contact with the lower lobe, implying the possibility of lobar torsion. Rethoracotomy on postoperative day 2 revealed a 240° clockwise rotation of the congested middle lobe. Therefore, we performed simple detorsion. The patient was discharged 10days after rethoracotomy without further adverse events.

Discussion

In our case, patency of the pulmonary artery and temporary improvement of the atelectasis using a bronchoscopic aeration maneuver could not rule out the possibility of lobar torsion.

Conclusion

The position of the staple placed on the interlobar fissure should be evaluated using computed tomography in postoperative middle lobe atelectasis. If the aeration maneuver for middle lobe atelectasis using bronchoscope fails, rethoracotomy should be considered.

SUBMITTER: Yanagihara T

PROVIDER: S-EPMC5650659 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Publications

Computed tomography detection of stapled interlobar fissure facilitates diagnosing postoperative lobar torsion: A case report.

Yanagihara Takahiro T Ichimura Hideo H Kobayashi Keisuke K Sato Yukio Y

International journal of surgery case reports 20171016

<h4>Introduction</h4>Atelectasis of the right middle lobe following right upper lobectomy may result from lobar torsion, bronchial kink, or impacted mucus plug. Although clinical consequence of lobar torsion could be serious, differentiating it from bronchial kink is occasionally challenging.<h4>Presentation of case</h4>A 39-year old man with non-small cell lung cancer of cT1aN0M0 stage IA underwent right upper lobectomy. On postoperative day 1, we identified middle lobe atelectasis on the chest ...[more]

PMID: 29055239

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Project description:OBJECTIVES: To compare the accuracy of pulmonary lobar volumetry using the conventional number of segments method and novel volumetric computer-aided diagnosis using 3D computed tomography images. METHODS: We acquired 50 consecutive preoperative 3D computed tomography examinations for lung tumours reconstructed at 1-mm slice thicknesses. We calculated the lobar volume and the emphysematous lobar volume < -950 HU of each lobe using (i) the slice-by-slice method (reference standard), (ii) number of segments method, and (iii) semi-automatic and (iv) automatic computer-aided diagnosis. We determined Pearson correlation coefficients between the reference standard and the three other methods for lobar volumes and emphysematous lobar volumes. We also compared the relative errors among the three measurement methods. RESULTS: Both semi-automatic and automatic computer-aided diagnosis results were more strongly correlated with the reference standard than the number of segments method. The correlation coefficients for automatic computer-aided diagnosis were slightly lower than those for semi-automatic computer-aided diagnosis because there was one outlier among 50 cases (2%) in the right upper lobe and two outliers among 50 cases (4%) in the other lobes. The number of segments method relative error was significantly greater than those for semi-automatic and automatic computer-aided diagnosis (P < 0.001). The computational time for automatic computer-aided diagnosis was 1/2 to 2/3 than that of semi-automatic computer-aided diagnosis. CONCLUSIONS: A novel lobar volumetry computer-aided diagnosis system could more precisely measure lobar volumes than the conventional number of segments method. Because semi-automatic computer-aided diagnosis and automatic computer-aided diagnosis were complementary, in clinical use, it would be more practical to first measure volumes by automatic computer-aided diagnosis, and then use semi-automatic measurements if automatic computer-aided diagnosis failed.

Project description:ObjectivesThis study aimed to review the safety of a reusable sealing instrument, BiClamp(®), as an alternative to the mechanical stapler for interlobar fissure division in pulmonary lobectomy.MethodsA retrospective review was conducted of 95 patients who underwent pulmonary lobectomy performed by a single surgeon between November 2005 and March 2010. The patients were divided into two groups according to the period before and after introduction of the BiClamp(®): 29 patients who underwent fissure division with staples only (staple group) and 66 patients who underwent the same procedure mainly with the instrument (BiClamp(®) group).ResultsThere were 60 (63.2%) male and 35 (36.8%) female patients, with a mean ± SD age of 67.5 ± 10.8 years. Comparison of the characteristics of the two groups revealed that the BiClamp(®) group included significantly more cases of lobectomy by video-assisted thoracic surgery and far fewer completely lobulated lungs; 6 of 66 patients (9.1%) compared with 9 of 29 (31.0%) of the staple group. Except for 18 patients who underwent division using staples owing to thick parenchyma of the interlobar fissure, we attempted to divide the fissure of 42 patients in the BiClamp(®) group. Solo use of the BiClamp(®) was possible for 25 of 60 patients (41.7%) with an incomplete fissure. Eight patients (13.3%) needed one staple cartridge in combination with BiClamp(®), five (8.3%) needed two cartridges and four (6.7%) patients needed three (combined use). In most cases, except for right upper or middle lobectomy, the division of the interlobar fissure could be performed by sole use of the BiClamp(®). Incidence rates of prolonged air leakage and pneumonia were not significantly different between the two groups (respectively, 6.9 and 3.4% in the staple group vs 10.6 and 9.1% in the BiClamp(®) group).ConclusionsThe study results demonstrate that the division of the interlobar fissure in pulmonary lobectomy with BiClamp(®) is safe and feasible in most cases. While the results point out the limitation that division of the right upper or middle lobe may still be a challenge, they show the potential benefit of staple reduction. Less use of staples results in reduced medical costs and carbon dioxide emission, contributing to 'ecosurgery', which ultimately conserves the global environment.

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Dataset Information

Computed tomography detection of stapled interlobar fissure facilitates diagnosing postoperative lobar torsion: A case report.

Introduction

Presentation of case

Discussion

Conclusion

Publications

Computed tomography detection of stapled interlobar fissure facilitates diagnosing postoperative lobar torsion: A case report.

Similar Datasets

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