Is Major Pulmonary Resection by Video-Assisted Thoracic Surgery an Adequate Procedure in Clinical Stage I Lung Cancer?

Oncologic Outcomes of Surgery Versus SBRT for Non-Small-Cell Lung Carcinoma: A Systematic Review and Meta-analysis

BACKGROUND

The optimal treatment of stage I non-small-cell lung carcinoma is subject to debate. The aim of this study was to compare overall survival and oncologic outcomes of lobar resection (LR), sublobar resection (SR), and stereotactic body radiotherapy (SBRT).

METHODS

A systematic review and meta-analysis of oncologic outcomes of propensity matched comparative and noncomparative cohort studies was performed. Outcomes of interest were overall survival and disease-free survival. The inverse variance method and the random-effects method for meta-analysis were utilized to assess the pooled estimates.

RESULTS

A total of 100 studies with patients treated for clinical stage I non-small-cell lung carcinoma were included. Long-term overall and disease-free survival after LR was superior over SBRT in all comparisons, and for most comparisons, SR was superior to SBRT. Noncomparative studies showed superior long-term overall and disease-free survival for both LR and SR over SBRT. Although the papers were heterogeneous and of low quality, results remained essentially the same throughout a large number of stratifications and sensitivity analyses.

CONCLUSION

Results of this systematic review and meta-analysis showed that LR has superior outcomes compared to SBRT for cI non-small-cell lung carcinoma. New trials are underway evaluating long-term results of SBRT in potentially operable patients.

Systematic review and meta-analysis of video-assisted thoracoscopic surgery segmentectomy versus lobectomy for stage I non-small cell lung cancer

BACKGROUND

Whether video-assisted thoracoscopic surgery (VATS) segmentectomy and VATS lobectomy provide similar perioperative and oncological outcomes in stage I non-small cell lung cancer (NSCLC) is still controversial.

METHODS

Meta-analysis of 12 studies comparing outcomes after VATS lobectomy and VATS segmentectomy for stage I NSCLC. Data were analyzed by the RevMan 5.3 software.

RESULTS

Disease-free survival (HR 1.19, 95% CI 0.89 to 1.33, P = 0.39), overall survival (HR 1.11, 95% CI 0.89 to 1.38, P = 0.36), postoperative complications (OR = 1.10, 95% CI 0.69 to 1.75, P = 0.7), intraoperative blood loss (MD = 3.87, 95% CI - 10.21 to 17.94, P = 0.59), operative time (MD = 10.89, 95% CI - 13.04 to 34.82, P = 0.37), air leak > 5 days (OR = 1.20, 95% CI 0.66 to 2.17, P = 0.55), and in-hospital mortality (OR = 1.67, 95% CI 0.39 to 7.16, P = 0.49) were comparable between the groups. Postoperative hospital stay (MD = - 0.69, 95% CI - 1.19 to - 0.19, P = 0.007) and number of dissected lymph nodes (MD = - 6.44, 95%CI - 9.49 to - 3.40, P < 0.0001) were significantly lower in VATS segmentectomy patients.

CONCLUSIONS

VATS segmentectomy and VATS lobectomy provide similar oncological and perioperative outcomes for stage I NSCLC patients. This systematic review was registered on PROSPERO and can be accessed at http://www.crd.york.ac.uk/PROSPERO/display_record.php?ID = CRD42019133398.

Minimally Invasive Anterior Thoracotomy for Routine Lung Cancer Resection

Objectives

A 7-year experience with a minimally invasive approach to routine lung cancer resection is compared with standard lateral open thoracotomy.

Methods

All patients undergoing lung resection with curative intent for primary lung cancer between July 1998 and November 2005 by a single surgical team were registered. Surgical access was obtained through a mini 5- to 6-cm anterior thoracotomy with video assistance; direct visualization was also used extensively.

Results

Patients (n = 167) underwent major pulmonary resection for primary lung cancer. The minimally invasive group (MI), 137 patients, included 12 fully endoscopic or robotic approaches. The open lateral (OL) approach included 30 patients (18%). Both groups included pneumonectomies (8 MI, 3 OL), sleeve resections (3 MI, 2 OL), chest wall resections (2 MI, 5 OL), and pancoasts (3 MI, 0 OL) and had full lymph node resections. The Kaplan-Meier estimated overall mean survival was 64.5 months (95% CL, 58 to 71 months). Mean estimate survivals were stage 1a, 66%; stage 1b, 65%; stage 2a, 61%; stage 2b, 55%; stage 3a, 52%; stage 3b, 45%. Mean survival in the MI group was 64.3 months versus 59.3 with standard open access (OL) (X2 = 0.003 Mantel-Cox; significance, 0.959). In-hospital mortality rate was 2.2%; conversion from a mini to open procedure was 1.5%. Avoidance of rib spreading (soft tissue retractor) and small incisions appeared to have reduced pain and improved early recovery.

Conclusions

Kaplan-Meier survival for routine unselected lung cancer resection through a minimal access approach was not significantly different from the open approach and reflects published survival curves.

Three-port single-intercostal versus multiple-intercostal thoracoscopic lobectomy for the treatment of lung cancer: a propensity-matched analysis

Background

In this retrospective study, we aimed to demonstrated that three-port single-intercostal (SIC) thoracoscopic lobectomy is an effective choice for lung cancer by comparing the perioperative outcomes of patients with non-small-cell lung cancer treated with three-port SIC and conventional multiple-intercostal (MIC) thoracoscopic lobectomy.

Methods

From January 2013 to January 2018, 642 non-small-cell lung cancer patients underwent thoracoscopic lobectomy via a three-port SIC or MIC technique. Propensity-matched analysis incorporating preoperative clinical variables was used to compare the perioperative outcomes between the two groups.

Results

The first 20 patients were excluded to account for the learning curve effect in the SIC group. Propensity matching yielded 186 patients in each group. A small percentage of patients had major morbidity, including 4.8% in the SIC group and 6.5% in the MIC group; there was no significant difference between the two groups. Although the total number of lymph nodes harvested (25.3 vs. 23.8, p = 0.160) and stations removed (6.5 vs. 6.7, p = 0.368) were similar between the two groups, more subcarinal lymph nodes were removed (6.9 vs. 5.2, p < 0.001) in the SIC group than in the MIC group. Furthermore, other perioperative outcomes in the SIC group were not fewer than those in the MIC group.

Conclusions

Both techniques are acceptable for the treatment of non-small-cell lung cancer. Three-port SIC VATS lobectomy can provide an alternative procedure in thoracoscopic surgery.

Comparison of survival between lung cancer patients receiving single or multiple-incision thoracoscopic surgery

Background

The effect of single-incision thoracoscopic surgery for lung cancer on long-term survival is unknown and no studies have investigated whether there are differences in survival between single and multiple incision approaches. We aimed to compare long-term overall survival and disease-free survival of patients who underwent single-incision thoracoscopic surgery with those who received multiple-incision thoracoscopic surgery for lung cancer.

Methods

We retrospectively analyzed 532 patients with lung cancer who underwent either single-incision (n=150) or multiple-incision thoracoscopic resection (n=382) during the period January 2000 to December 2014. Patients were matched on propensity score at a 1:2 ratio to estimate the effect of treatment on long-term and disease-free survival. Overall survival and disease-free survival were assessed using the Kaplan-Meier method, the log-rank test and Cox proportional-hazards regression.

Results

Propensity matching resulted in 138 patients in the single-incision group and 276 patients in the multiple-incision group. The matched patients in the single-incision group had a significantly better 5-year overall survival than those in the multiple-incision group (P=0.027). Disease-free survival was similar between the two groups before and after matching. The number of chest wall incisions did not influence overall survival or disease-free survival.

Conclusions

The long-term outcomes of single-incision thoracoscopic surgery are comparable to those of multiple-incision thoracoscopic surgery for lung cancer.

Prevention and management of intraoperative crisis in VATS and open chest surgery: how to avoid emergency conversion

Video assisted thoracic surgery (VATS) has become a routinely utilized approach to complex procedures of the chest, such as pulmonary resection. It has been associated with decreased postoperative pain, shorter length of stay and lower incidence of complications such as pneumonia. Limitations to this modality may include limited exposure, lack of tactile feedback, and a two-dimensional view of the surgical field. Furthermore, the lack of an open incision may incur technical challenges in preventing and controlling operative misadventures leading to major hemorrhage or other intraoperative emergencies. While these events may occur in the best of circumstances, prevention strategies are the primary means of avoiding these injuries. Unplanned conversions for major intraoperative bleeding or airway injury during general thoracic surgical procedures are relatively rare and often can be avoided with careful preoperative planning, review of relevant imaging, and meticulous surgical technique. When these events occur, a pre-planned, methodical response with initial control of bleeding, assessment of injury, and appropriate repair and/or salvage procedures are necessary to maximize outcomes. The surgeon should be well versed in injury-specific incisions and approaches to maximize adequate exposure and when feasible, allow completion of the index operation. Decisions to continue with a minimally invasive approach should consider the comfort and experience level of the surgeon with these techniques, and the relative benefit gained against the risk incurred to the patient. These algorithms may be expected to shift in the future with increasing sophistication and capabilities of minimally invasive technologies and approaches.

Thoracoscopic Lobectomy Produces Long-Term Survival Similar to That with Open Lobectomy in Cases of Non-Small Cell Lung Carcinoma: A Propensity-Matched Analysis Using a Population-Based Cancer Registry

BACKGROUND

There is a lack of large, prospective, randomized studies comparing thoracoscopic and open lobectomy in terms of long-term survival in the setting of NSCLC. Additionally, large case series evaluating the issue are limited. Until now, whether thoracoscopic lobectomy entails a long-term survival benefit compared with open lobectomy not been determined.

METHODS

Data were obtained from the National Health Insurance Research Database published in Taiwan. We included patients treated with open lobectomy or thoracoscopic lobectomy. In this retrospective review, the clinicopathologic characteristics of 5222 patients with lung cancer during the period 2004-2010 were analyzed. Patients were stratified according to clinical stage. Overall survival (OS) was compared between patients treated with open and those treated with thoracoscopic lobectomy and was also compared between patients in the three different clinical stages. Propensity-matching analysis and multivariate analysis were performed.

RESULTS

Open lobectomy was performed on 3058 patients (58.6%) and thoracoscopic lobectomy on 2164 (41.4%). Propensity matching produced 1848 patients in each group. The 1-year, 3-year, and 5-year OS rates for propensity-matched patients treated with open lobectomy were 93.4%, 79.3%, and 65.5%, respectively. The 1-year, 3-year, and 5-year OS rates for propensity-matched patients treated with thoracoscopic lobectomy were 94.1%, 80.9%, and 68.7%, respectively. The difference was not statistically significant. In multivariate analysis, surgical resection (open versus thoracoscopic) was not an independent prognostic factor.

CONCLUSIONS

This propensity-matched study suggests that open and thoracoscopic lobectomy are associated with similar long-term survival in the setting of lung cancer. Thoracoscopic lobectomy is an acceptable surgical treatment of lung cancer.

Impact of comorbidity index on morbidity and survival in non-small cell lung cancer

Background

The number of surgeries in older patients with comorbidities is constantly growing. The present study examined the impact of comorbidity on postoperative complications and long-term survival in patients with completely resected non-small cell cancer.

Methods

Between 2004 and 2008, 423 patients with non-small cell lung cancer underwent complete resection. A retrospective comparison of perioperative mortality, morbidity, Charlson comorbidity index (CCI), and postoperative length of hospital stay was performed.

Results

The number of patients with CCI 0, 1–2, and ≥3 was 226, 170 and 27, respectively. The 5-year overall survival was 88% among patients with CCI 0, and 84% in those with CCI ≥1 ( p = 0.05) in all pathological stages. The CCI 0 group had significantly better overall survival than CCI 0 group and 30 (15%) in the CCI ≥1 group ( p = 0.024). Length of stay was shorter in the CCI 0 group (11 ± 5 days) than in the CCI ≥1 group (15 ± 19 days, p = 0.015).

Conclusions

A high CCI correlated with higher postoperative morbidity and longer length of stay. We identified better a prognosis in patients with CCI 0 compared to those with CCI 1–2.

Evaluation of a robot-assisted video-assisted thoracoscopic surgery programme

At present, there is increasing interest in surgical procedures using a robot-assisted device. The aim of this study was to investigate whether robot-assisted video-assisted thoracoscopic surgery (VATS) was more effective than conventional VATS. A total of 64 VATS lobectomies in Papworth Hospital (Cambridge, UK) were included in the study. In 34 cases the lobectomies were performed using conventional VATS (CV group), while in the remaining 30 cases the lobectomies were performed using robot-assisted VATS (Robotic group). In the robot-assisted VATS, FreeHand^®, a thoracoscopic camera controller produced by Freehand 2010 Ltd. (Eastleigh, UK), was used. The duration of the thoracoscopic surgery in the Robotic group was 145.50±10.43 min, whereas in the CV group the duration was 162.79±9.40 min. The surgery duration in the Robotic group was 10.62% shorter than that in the CV group (P<0.05). The rates of bleeding, pulmonary infection, arrhythmia and prolonged air leak (≥5 days) in the Robotic group were 0, 3.33, 26.67 and 13.33%, respectively, while the corresponding rates in the CV group were 2.94, 5.88, 20.59 and 17.65%, respectively. No significant differences were identified in the postoperative complication rates between the two groups (P≥0.05). There was no perioperative mortality in the study. Compared with conventional VATS, FreeHand-assisted VATS provides a similar rate of postoperative complications and a reduced surgery duration, and may be beneficial for the recovery of the patients following VATS.

Segmentectomy as a safe and equally effective surgical option under complete video-assisted thoracic surgery for patients of stage I non-small cell lung cancer

BACKGROUND

While video-assisted thoracic surgery lobectomy has been widely accepted for the treatment of non-small cell lung cancer, the debate over video-assisted thoracic surgery segmentectomy still remains. This study compared the clinical outcomes using the two procedures for stage I non-small cell lung cancer patients.

METHODS

Retrospective review was conducted on patients who underwent video-assisted thoracic surgery segmentectomy or lobectomy for clinical stage I non-small cell lung cancer at Shanghai Chest Hospital between November 2009 and May 2012. Video-assisted thoracic surgery segmentectomy was performed on 36 patients and video-assisted thoracic surgery lobectomy on 138 patients. Comparisons between the 2 groups were performed in patient demographic and clinical characteristics, intraoperative parameters and oncology outcomes.

RESULTS

Mean volume of chest tube drainage after operation was smaller for segmentectomy than for lobectomy (1021 ml vs. 1328 ml, P=0.036). Other parameters analysis including blood loss, operation time, chest tube duration and length of hospital stay favors the segmentectomy group numerically without significance. There was no significant difference in distributions in both intra and post operative complications. There was one peri-operative mortality from segmentectomy group and all other patients are alive with a median follow up of 327 days. There were 1 (2.8%) locoregional recurrence after segmentectomy and 6 recurrences (4.4%) after lobectomy (P=1.00). Multivariate survival analysis revealed no significant difference in recurrence-free survivals between the two groups. Two patients successfully underwent bilateral segmentectomies and are free of disease.

CONCLUSIONS

For patients with stage I non-small cell lung cancer, video-assisted thoracic surgery segmentectomy offers a safe and equally effective option and can be applied to complicated operation such as bilateral segmentectomy.

Indications for conversion of thoracoscopic to open thoracotomy in video-assisted thoracoscopic lobectomy

BACKGROUND

The study aims to discuss indications for conversion to thoracotomy in completely thoracoscopic lobectomy.

METHODS

From September 2006 to April 2010, 306 patients (164 men, 142 women, median age 58.1 years, range 15 to 86 years) underwent completely thoracoscopic lobectomy. There were 223 cases of primary lung cancer, 11 other malignant diseases and 72 cases of benign disease. The steps of the thoracoscopic procedures are almost identical to those of traditional open lobectomy, which requires standard mediastinal lymph node dissection for primary lung cancer patients. When conversion to an open procedure is necessary, such as in the presence of lymph node adhesions or metastases and bleeding, operative incisions are extended 12-15 cm towards lower angle of the scapula, retractors are used to separate the ribs, and the procedure is completely under direct visualization.

RESULTS

All procedures were performed without significant complications or intraoperative deaths. The average surgical duration was 195 min, and average blood loss was 256 mL with no blood transfusions required. The average chest tube drainage duration was 7.45 days. The average post-operative hospital stay was 10.34 days. There were 27 cases (8.8%) of conversion to open thoracotomy, for the reasons of interference by lymph nodes (n = 18), bleeding (n = 4), inflammatory adhesions of arteries (n = 3) and large size tumours (n = 2).

CONCLUSION

Adhesions or lymph node metastases and bleeding were the most important causes of conversion to thoracotomy in completely thoracoscopic lobectomy. Large tumours, fused fissures and dense pleural adhesions can always be managed thoracoscopically.

[Advances of treatment about elderly clinical stage I non-small cell lung cancer]

随着人口的老龄化, 高龄肺癌患者的比例在增大。近十几年来肺叶切除加纵隔淋巴结清扫一直是Ⅰ期非小细胞肺癌(non small cell lung cancer, NSCLC)患者的标准术式。近年研究发现Ⅰ期高龄NSCLC亚肺叶切除术可以取得和肺叶切除术相当的远期疗效而且可以保留更多的正常肺组织, 有关Ⅰ期NSCLC的标准术式再次引起争议。Ⅰ期高龄NSCLC患者是一个特殊的群体, 常因机体功能减退或合并有基础疾病而无法耐受开胸手术, 胸腔镜的问世以及立体定向放射治疗技术的发展使患者有了更多的选择。Ⅰ期高龄NSCLC的治疗在朝着个体化和多样化方向发展。

Is VATS lobectomy better: perioperatively, biologically and oncologically?

The current review focuses on a clinical comparison of lobectomy by means of video-assisted thoracoscopic surgery (VATS) and open lobectomy. The best available evidence strongly suggests that VATS lobectomy is less morbid than open lobectomy, and that VATS lobectomy is less immunosuppressive and elicits a milder inflammatory response than open lobectomy. Midterm to long-term oncologic results of patients with early-stage non-small cell lung cancer appear to be equivalent for VATS and open lobectomy. Because a large, prospective, randomized, multiinstitutional trial of open versus VATS lobectomy will likely never take place, we are dependent on the summarized information to draw practical conclusions.

Is thoracoscopic pneumonectomy safe?

BACKGROUND

While thoracoscopic surgical lobectomy is an established operation, the safety of thoracoscopic pneumonectomy (TP) is uncertain.

METHODS

From January 1, 2002, to September 30, 2008 at a comprehensive cancer center, 70 patients underwent pneumonectomy. Three patients were excluded for emergent operations. Thoracoscopic pneumonectomy was completed successfully in 24 patients and attempted in 8 others (25% conversion rate). Analysis was done on an intention-to-treat basis.

RESULTS

By 2008, 75% of pneumonectomy cases were planned as TP while there were no conversions to thoracotomy. There was no difference in median blood loss between patients undergoing TP versus thoracotomy (325 vs 300 mL, p = 0.52), but operations were longer (286 vs 228 minutes, p < 0.01). Median intensive care unit stay was 2 days in both groups and median hospital stay was 5.0 days in the TP group versus 6.0 days in the thoracotomy group (p = 0.28). Major complications were similar between groups. The TP reoperations were for bleeding (2), bronchopleural fistula (2), empyema (1), and chylothorax (1). The only TP death occurred in an 83-year-old patient from respiratory failure. Neither the use of adjuvant therapy nor the time between surgery and commencement of adjuvant therapy was different between groups. Conversions alone compared with patients undergoing thoracotomy were associated with a moderate increase in blood loss and intensive care unit stay, but not in any major complications.

CONCLUSIONS

Thoracoscopic pneumonectomy can be done safely. The availability of this option is important especially in an era of multimodality therapy as more debilitated patients present for surgical therapy.

Thoracoscopic segmentectomy compares favorably with thoracoscopic lobectomy for patients with small stage I lung cancer

OBJECTIVE

As thoracoscopic lobectomy becomes widely applied for treatment of non-small cell lung cancer, thoracoscopic segmentectomy remains controversial for patients with small stage I lung cancers. Questions remain regarding safety, morbidity, mortality, and recurrence rate. This study compared outcomes between thoracoscopic segmentectomy and lobectomy.

METHODS

Retrospective review was undertaken of patients who underwent thoracoscopic segmentectomy or lobectomy for clinical stage I non-small cell lung cancer between January 2002 and February 2008. Indications for segmentectomy were tumor smaller than 3 cm, limited pulmonary reserve, comorbidities, and peripheral tumor location.

RESULTS

Thirty-one patients underwent segmentectomy and 113 underwent lobectomy. Patients after segmentectomy had worse mean forced expiratory volume in 1 second than after lobectomy (83% vs 92%, P = .04). There were no differences in mean number of nodes (10) and nodal stations (5) resected. Segmentectomy and lobectomy groups had similar median chest tube durations (2 vs 3 days, P = .18), stays (both 4 days), total complications, recurrence rates, and survivals at mean follow-ups of 22 and 21 months, respectively. Lobectomy group had 1 30-day death; segmentectomy group had none. There were 5 (17.2%) recurrences after segmentectomy and 23 (20.4%) after lobectomy (P = .71), with locoregional recurrence rates of 3.5% and 3.6%, respectively.

CONCLUSION

Thoracoscopic segmentectomy is a safe option for experienced thoracoscopic surgeons treating patients with small stage I lung cancers. No significant difference in oncologic outcome was seen between thoracoscopic segmentectomy and thoracoscopic lobectomy. Lymph node dissection could be performed as effectively during segmentectomy as lobectomy.

Preoperative evaluation for thoracic surgery

The goal of the preoperative evaluation for thoracic surgery is to assess and implement measures to decrease perioperative complications and prepare high-risk patients for surgery. Major respiratory complications, such as atelectasis, pneumonia, and respiratory failure, occur in 15% to 20% of patients and account for most of the 3% to 4% mortality rate. Development of pulmonary complications has been associated with higher postoperative mortality rates. Strategies aimed at preventing postoperative difficulties have the potential to reduce morbidity and mortality, decrease hospital stay, and improve resource use. One lung ventilation leads to a significant derangement of gas exchange, and hypoxemia can develop due to increased intrapulmonary shunting. Recent advances in anesthetic management, monitoring devices, improved lung isolation techniques, and improved critical care management have increased the number of patients who were previously considered inoperable. In addition, there is a growing tendency to offer surgery to patients with significant lung function impairment; hence a higher incidence of intraoperative gas-exchange abnormalities can be expected. The anesthesiologist must also consider the risks of denying or postponing a potentially curative operation in patients with lung cancer. Detailed consideration of the information provided by preoperative testing is essential to successful outcomes following thoracic surgery.

Surgery for early-stage non-small cell lung cancer: a systematic review of the video-assisted thoracoscopic surgery versus thoracotomy approaches to lobectomy

Video-assisted thoracoscopic surgery (VATS) for lobectomy has been touted to provide superior outcomes, compared with thoracotomy, for patients with early-stage non-small-cell lung cancer (NSCLC). However, supporting data are limited to case series and small observational studies. We hypothesized that a systematic review of the literature would enable a more objective evaluation of the evidence in order to determine the potential superiority of the VATS approach, compared with thoracotomy, in terms of short-term morbidity and long-term survival. To identify relevant articles for inclusion in our analysis, we performed a systematic review of the MEDLINE database. We looked for randomized controlled trials, observational studies, and case series that reported outcomes after VATS or thoracotomy lobectomy for NSCLC. For statistical testing, we used a two-sided approach (alpha = 0.05) under the hypothesis that VATS lobectomy is superior to thoracotomy lobectomy. We screened 17,923 studies. After independent review of the abstracts by 2 reviewers, we included 39 studies (only one randomized controlled trial) in our analysis. In aggregate, these 39 studies involved 3256 thoracotomy and 3114 VATS patients. The characteristics of the two groups were not significantly different. Compared with thoracotomy, VATS lobectomy was associated with shorter chest tube duration, shorter length of hospital stay, and improved survival (at 4 years after resection), all statistically significant. Compared with lobectomy performed by thoracotomy, VATS lobectomy for patients with early-stage NSCLC is appears to favor lower morbidity and improved survival rates.

Can stereotactic fractionated radiation therapy become the standard of care for early stage non-small cell lung carcinoma

Management of early stages non-small cell lung carcinoma has traditionally been surgery with radiation selected for medically inoperable patients. Recent emergence of stereotactic body radiation therapy allows for delivery of high radiation dose to the tumor while sparing normal lungs. This reviews compares loco-regional control, survival and complications rates between these two treatment modalities. Literature search identifies studies with stereotactic body radiation therapy and surgery for early stages non-small cell lung cancer. Effectiveness and toxicity of these two modalities was assessed. Stereotactic body radiation therapy is associated with minimal morbidity and provides comparable local control and survival in patients with multiple co-morbidities factors. Stereotactic body radiation therapy may become standard of care for operable early stages non-small cell lung cancer.

The emerging role of minimally invasive surgical techniques for the treatment of lung malignancy in the elderly

As a consequence of the general aging of the population, improved diagnostic techniques, and preoperative interventions to enhance the efficacy of surgical therapy, increasing numbers of elderly patients are presenting for pulmonary resection. Clear association between advanced age and the perioperative morbidity and mortality associated with lung cancer surgery has generated considerable interest in applying minimally invasive operative techniques in the geriatric population under the belief that this approach will improve outcome. This review examines the available data regarding video-assisted thoracoscopic lobectomy and concludes that this technique for the surgical treatment of early-stage lung cancer may parallel conventional thoracotomy in terms of oncologic efficacy while decreasing perioperative morbidity in the elderly.

Is video-assisted thoracic surgery lobectomy better? Quality of life considerations

Video-assisted thoracic surgery lobectomy has controversial advantages over traditional open surgical approaches. Subjective concerns such as pain, dyspnea, physical functioning, and overall satisfaction generally favor VATS but vary depending on survey timing. Independence, a major quality of life component, favors video-assisted thoracic surgery because fewer objective hospital and discharge resources are needed because pulmonary function, activity level, muscle strength, and walking capacity are better. Video-assisted thoracic surgery often hastens return to work and facilitates adjuvant chemotherapy or subsequent urgent surgical procedures. Video-assisted thoracic surgery-related quality of life benefits are amplified by advanced age (or other frailties) and reduced by advanced cancer stage or comorbid illness.

Video-assisted thoracic surgery lobectomy (VATS), open thoracotomy, and the robot for lung cancer

Video-assisted thoracic surgery (VATS) lobectomy provides a minimally invasive approach for the management of early-stage lung cancer. Questions about the safety of VATS lobectomy and its adequacy as a cancer operation compared with open thoracotomy have hindered its universal acceptance among thoracic surgeons. Evidence suggests that VATS lobectomy can be safely performed and is an adequate cancer operation for early-stage non-small cell lung cancer. However, adequately powered well-balanced studies comparing VATS with open thoracotomy for lobectomy are lacking in the literature.

Pulmonary segmentectomy by thoracotomy or thoracoscopy: reduced hospital length of stay with a minimally-invasive approach

BACKGROUND

Previous studies have discouraged limited pulmonary resection for primary lung cancer, but pulmonary segmentectomy has advantages for some patients. Furthermore, while thoracoscopic lobectomy has been increasingly applied with well-demonstrated advantages compared with thoracotomy, few data exist regarding thoracoscopic approaches to pulmonary segmentectomy. This study compares thoracoscopic segmentectomy (TS) with open segmentectomy (OS).

METHODS

This is a retrospective review of prospectively collected data for 77 consecutive segmentectomy patients treated between 2000 and 2006 at a single center. Preoperative, intraoperative, and postoperative variables for patients undergoing TS (n = 48) were compared with those undergoing OS (n = 29). Student's t tests were used for continuous data and Fisher's exact tests for dichotomous data.

RESULTS

Baseline demographics were similar between groups. Indications for pulmonary resection included non-small cell lung cancer (n = 39), metastatic disease (n = 30), and other diagnoses (n = 8). All common segmentectomies were represented. No thoracoscopic cases required conversion to open procedures. Operative times, estimated blood loss, and chest tube duration were similar between groups. Outcomes were similar except that hospital length of stay was significantly less among TS patients (length of stay 6.8 +/- 6 days OS versus 4.3 +/- 3 days TS; p = 0.03). Thirty-day mortality was 6.9% (2 of 29) for the OS group compared with 0% for the TS group. Long-term survival rates were significantly better in the TS group (p = 0.0007).

CONCLUSIONS

Thoracoscopic segmentectomy is a safe and feasible procedure, comparing favorably with OS by reducing hospital length of stay. For experienced thoracoscopic surgeons, TS appears to be a sound option for lung-sparing, anatomic pulmonary resections.

Surgical management of primary lung cancer

Despite advancements in systemic treatment and the understanding of tumor biology, the mainstay for the treatment of lung cancer remains its resection. All patients with lung cancer should be considered surgical candidates until they are proven to have contraindications to resection. This article reviews preoperative assessment and the operative technique for the surgical treatment of lung cancer. As with other surgical specialties, thoracic surgery is moving towards minimally invasive techniques that are reducing morbidity, mortality, and length of stay. This advance is allowing patients an earlier recovery from major pulmonary surgery.

Video-Assisted Thoracic Surgery Lobectomy With Bronchoplasty for Lung Cancer: Initial Experience and Techniques

BACKGROUND

Many surgeons think video-assisted thoracic surgery is too complex to be applied to bronchoplasty; therefore, our institution tried to develop some safe and reliable techniques for video-assisted thoracic surgery bronchoplasty.

METHODS

One hundred thirty-four patients with lung cancer underwent curative video-assisted thoracic surgery lobectomy including mediastinal dissection at Iizuka hospital between October 2001 and September 2006. Five of these patients underwent radical lung lobectomy with bronchoplasty using video-assisted thoracic surgery. A minithoracotomy was performed at the lateral chest wall to place sutures around the bronchi. A continuous suture was placed at the median wall of the bronchi in cases of circumferential reconstruction, and shortened rubber tubes and silk suture lines were used for assisting with reconstruction.

RESULTS

One patient with right lung carcinoma was treated with sleeve resection of the right main bronchus, whereas the others were treated with wedge resection. In one case, chylothorax was seen as a postoperative complication. There were no serious complications related to bronchoplasty. All cases are alive without any recurrence during follow-up.

CONCLUSIONS

The importance of position of minithoracotomy and another access port, management of sutures, and the secure tightened method was assessed. There were no serious postoperative complications. Video-assisted thoracic surgery bronchoplasty is a complex procedure, but it can safely be performed using some additional techniques.

Video-assisted thoracoscopic surgery is more favorable than thoracotomy for resection of clinical stage I non-small cell lung cancer

BACKGROUND

Lobectomy for patients with clinical stage I non-small cell lung cancer (NSCLC) can be performed by thoracotomy or by video-assisted thoracoscopic surgery (VATS). We compared the operative characteristics and postoperative course for patients with clinical stage I NSCLC who underwent lobectomy by VATS or thoracotomy.

METHODS

We retrospectively reviewed the charts of all patients undergoing lobectomy for clinical stage I NSCLC from January 1, 1998, through June 30, 2005.

RESULTS

We performed 147 lobectomies (88 thoracotomy, 59 VATS) in 147 patients with clinical stage I NSCLC. Patient demographics were similar between groups; however, VATS patients had more hypertension (p = 0.0114), chronic renal insufficiency (p = 0.0479), and previous malignancies (p = 0.0086). The two groups did not differ in pathologic stage, tumor size, histologic results, or number of positive nodes. More total nodes were identified in thoracotomy patients (p = 0.0001), and they had a shorter intensive care unit stay (p = 0.0224). VATS patients had significantly less postoperative pneumonia (p = 0.0023). VATS patients trended toward fewer chest tube days and a shorter hospital length of stay. The two groups did not differ in operative time, blood loss, atrial fibrillation, or number of ventilator days. Median survival between the cohorts was similar (>7.9 years thoracotomy versus >4.6 years VATS, log-rank p = 0.6939).

CONCLUSIONS

Patients undergoing VATS lobectomy for clinical stage I NSCLC, despite having more comorbidities, had fewer postoperative complications. The approaches are equivalent in operative time, blood loss, length of stay, and survival rate. Compared with thoracotomy, VATS lobectomy for patients with clinical stage I NSCLC appears to be a less morbid operation.

Pulmonary resection in the elderly

PURPOSE OF REVIEW

With increasing longevity, altered demographics of the lung cancer population, and preoperative interventions to enhance the efficacy of surgical therapy, increasing numbers of elderly people will present for anesthesia and pulmonary resection.

RECENT FINDINGS

The geriatric population often exhibits wide disparity between chronologic and physiologic senescence which is underscored by data indicating that outcome following lung resection for cancer is influenced more by tumor stage, preoperative functional status and comorbidities than age alone. Nonetheless, the normal process of cardiopulmonary aging can limit the physiological reserve necessary to compensate for perioperative stress even in otherwise healthy elderly patients. Data indicate a relatively favorable risk-benefit relationship for lung resection in the elderly given the poor prognosis for patients undergoing palliative care or chemotherapy or radiation alone. Emerging experience now suggests that minimally invasive surgical techniques for the treatment of lung cancer may parallel conventional thoracotomy in terms of oncologic efficacy while decreasing perioperative morbidity in the elderly.

SUMMARY

The combination of an aging population, recent advances in neoadjuvant therapies, data supporting the oncologic efficacy of resection, and minimally invasive surgical techniques strongly suggests that more elderly patients will be candidates for surgical management of their lung cancer, thus presenting anesthesiologists with unique challenges.

Prognostic significance of [(18)F]fluorodeoxyglucose uptake on positron emission tomography in patients with pathologic stage I lung adenocarcinoma

BACKGROUND

[(18)F]Fluoro-2-deoxyglucose uptake on positron emission tomography (FDG-PET) has been frequently used for diagnosis and staging of lung cancer. The prognostic significance of FDG uptake on PET was evaluated in patients with pathologic Stage I lung adenocarcinoma (tumor stages were based on the TNM classification of the International Union Against Cancer).

METHODS

Disease-free survival of 98 patients with pathologic Stage I lung adenocarcinoma who were treated by curative resection was examined in relation to sex, age, histologic grade of differentiation, surgical procedure, tumor stage, and FDG uptake measured as the maximum standardized uptake value (SUV).

RESULTS

Sixty-three patients were had Stage IA disease and 35 patients had Stage IB disease. Six patients each with Stage IA and Stage IB disease developed disease recurrence after a mean postsurgical follow-up period of 31 months. Ten (23%) of the 43 patients with SUV > or = 3.3 developed a recurrence compared with 2 (4%) of the 55 patients with SUV < 3.3 (P = .020). Ten (20%) of the 51 patients with moderately or poorly differentiated adenocarcinoma developed disease recurrence, compared with 2 (4%) of the 47 patients with well-differentiated adenocarcinoma (P = .056). Multivariate analysis demonstrated that histologic grade of differentiation was not correlated with the frequency of tumor recurrence (P = .286), whereas SUV was found to be marginally correlated (P = .079).

CONCLUSIONS

FDG uptake appears to be predictive of disease-free survival in patients with Stage I lung adenocarcinoma. FDG uptake could yield important information for determining the likely value of postoperative adjuvant chemotherapy in such patients.

Video-assisted thoracic surgery for pleural empyema

BACKGROUND

After we gained considerable experience with video-assisted thoracic surgery (VATS) and became familiar with its advantages, we started to use it for the treatment of thoracic empyema.

METHODS

We treated 130 patients with pleural empyema in whom chest tube drainage and antibiotic therapy had failed to produce a satisfactory result. Six months after surgery they had clinical and radiologic assessment and spirometry.

RESULTS

Video-assisted surgery was performed in all patients. Mean operative time was 93 minutes (range, from 55 to 180 minutes), mean duration of postoperative chest tube drainage was 10 days (range, from 5 to 32 days), and mean hospital stay was 16 days (range, from 3 to 56 days). The rate of conversion to open thoracotomy was 3.1%. Complications for which reoperation was necessary occurred in 9% of patients. At follow-up after six months, the mean forced expiratory volume in 1 second was 87.7% (range, from 69.5% to 105.9%), the mean postoperative vital capacity was 84.4%, (range, from 59.9% to 97.9%). There were no postoperative or procedure-related deaths.

CONCLUSIONS

Video-assisted thoracic surgery is a safe and effective treatment option for fibropurulent empyema with low morbidity and mortality. Conversion to thoracotomy should be used if necessary to remove all of the fibropurulent material and achieve complete expansion of the lung to insure a good outcome.

Evolution to video-assisted thoracic surgery lobectomy after training: initial results of the first 30 patients

BACKGROUND

In early-stage lung cancer, evidence is accumulating for the benefits of lobectomy by video-assisted thoracic surgery (VATS) over open lobectomy. Few thoracic training programs offer sufficient experience in this technically demanding procedure. This article describes the evolution of a new graduate's practice from open thoracotomy to VATS lobectomy.

STUDY DESIGN

Our model involves a transition in technique from posterolateral thoracotomy to muscle-sparing thoracotomy and, ultimately, to VATS lobectomy. This approach was evaluated by examining outcomes of open thoracotomy patients before VATS lobectomy and outcomes of the initial 30 VATS patients. Data were collected prospectively.

RESULTS

Before undertaking VATS lobectomy, 94 major pulmonary resections were performed by thoracotomy. Mortality was 1.2% for lobectomy and 0% for pneumonectomy. Use of the muscle-sparing thoracotomy increased from 17% of patients in the first half to 70% in the latter half of this group. For the first 30 VATS lobectomy patients, the mean operative time was 168 minutes. Median blood loss was 200 mL. Conversion rate to open thoracotomy was 13.3%. Mortality was 3.3% and morbidity was 26.7%. After short-term followup (mean followup 16 months), overall survival for stage I lung cancer was 96%.

CONCLUSIONS

With our approach, new graduates of thoracic surgery programs can safely transition to VATS lobectomy. Gaining experience with the lateral muscle-sparing thoracotomy is an important step in the transition, as it offers similar operative exposure. Longterm disease-free and overall survival data are needed to evaluate our oncologic efficacy with this approach.

Imaging of the Patient with Non–Small Cell Lung Cancer

Lung cancer is the most common type of cancer and is the leading cause of cancer deaths in the United States for both men and women. Even though the 5-year survival rate of patients with lung cancer remains dismal at 14% for all cancer stages, treatments are improving and newer agents for lung cancer appear promising. Therefore, an accurate assessment of the extent of disease is critical to determine whether the patient is treated with surgical resection, radiation therapy, chemotherapy, or a combination of these modalities. Radiologic imaging plays an important role in the staging evaluation of the patient; however, radiologists need to be aware that there are also important differences in what each specialist needs from imaging to provide appropriate treatment. This article reviews the role of imaging in patients with non-small cell lung cancer, with an emphasis on the radiologic imaging findings relevant for each specialty.