Caroline Rivera

Risk model of in-hospital mortality after pulmonary resection for cancer: A national database of the French Society of Thoracic and Cardiovascular Surgery (Epithor)

OBJECTIVES The estimation of risk-adjusted in-hospital mortality is essential to allow each thoracic surgery team to be compared with national benchmarks. The objective of this study is to develop and validate a risk model of mortality after pulmonary resection. METHODS A total of 18,049 lung resections for non-small cell lung cancer were entered into the French national database Epithor. The primary outcome was in-hospital mortality. Two independent analyses were performed with comorbidity variables. The first analysis included variables as independent predictive binary comorbidities (model 1). The second analysis included the number of comorbidities per patient (model 2). RESULTS In model 1 predictors for mortality were age, sex, American Society of Anesthesiologists score, performance status, forced expiratory volume (as a percentage), body mass index (in kilograms per meter squared), side, type of lung resection,extended resection, stage, chronic bronchitis, cardiac arrhythmia, coronary artery disease, congestive heart failure, alcoholism, history of malignant disease, and prior thoracic surgery. In model 2 predictors were age, sex, American Society of Anesthesiologists score, performance status, forced expiratory volume, body mass index, side, type of lung resection, extended resection, stage, and number of comorbidities per patient. Models 1 and 2 were well calibrated, with a slope correction factor of 0.96 and of 0.972, respectively. The area under the receiver operating characteristic curve was 0.784 (95% confidence interval, 0.76-0.8) in model 1 and 0.78 (95% confidence interval, 0.76-0.797) in model 2. CONCLUSIONS Our preference is for the well-calibrated model 2 because it is easier to use in practice to estimate the adjusted postoperative mortality of lung resections for cancer.

Surgical management and outcomes of elderly patients with early stage non-small cell lung cancer: a nested case-control study.

BACKGROUND The number of oncogeriatric patients with non-small cell lung cancer (NSCLC) is expected to increase in the next decades. METHODS We used the French Society of Thoracic and Cardiovascular Surgery database Epithor that includes information on > 140,000 procedures from 98 institutions. We prospectively collected data from January 2004 to December 2008 on 1,969 patients aged ≥ 70 years with NSCLC stage I or II and matched them with 1,969 control subjects aged < 70 years for sex, American Society of Anesthesia score, performance status, and FEV(1). Surgical treatment and postoperative outcomes were compared between the two age groups. RESULTS The absence of radical lymphadenectomy was more frequent in the older patients (14%, n = 269) than in the younger patients (9%, n = 170) (P < .0001). There was no significant difference in type of resection between older and younger patients, respectively (pneumonectomy, 8% [n = 164] vs 11% [n = 216]; lobectomy, 79% [n = 1,559] vs 77% [n = 1,521]; bilobectomy, 4% [n = 88] vs 5% [n = 97]; sublobar resection, 7% [n = 143] vs 6% [n = 118]; P = .08). Differences in number (P = .07) and severity (P = .69) of complications were not significant. Postoperative mortality was higher in elderly patients at every end point (30-day mortality, 3.6% [n = 70] vs 2.2% [n = 43] [P = .01]; 60-day mortality, 4.1% [n = 80] vs 2.4% [n = 47] [P = .003]; 90-day mortality, 4.7% [n = 93] vs 2.5% [n = 50] [P = .0002]). CONCLUSIONS Elderly patients with NSCLC should not be denied pulmonary resection on the basis of chronologic age alone. Among patients aged ≥ 70 years, 90-day mortality compared acceptably with mortality among younger matched patients. Additionally, the data show that for older patients, a 90-day mortality better represents their real mortality risk than 30- or 60-day figures. Our contemporary, multiinstitutional data importantly reveal that elderly patients, compared with their younger counterparts, do not have increased morbidity, incidence, or severity after pulmonary resection.

Characterization and Prediction of Prolonged Air Leak After Pulmonary Resection: A Nationwide Study Setting Up the Index of Prolonged Air Leak

BACKGROUND The objective of this study was to better characterize prolonged air leak (PAL), defined as an air leak longer than 7 days, and to develop and validate a predictive model of this complication after pulmonary resection. METHODS All lung resections entered in Epithor, the French national thoracic database (French Society of Thoracic and Cardiovascular Surgery), were analyzed. Data collected between 2004 and 2008 (n=24,113) were used to build the model using backward stepwise variable selection, and the 2009 data (n=6,813) were used for external validation. The primary outcome was PAL. Results of the predictive model were used to propose a score: the index of PAL (IPAL). RESULTS Prevalence of PAL after pulmonary resection was 6.9% (n=1,655) in the development data set. In the final model, 9 variables were selected: gender, body mass index, dyspnea score, presence of pleural adhesions, lobectomy or segmentectomy, bilobectomy, bulla resection, pulmonary volume reduction, and location on upper lobe. In the development data set, the C-index was 0.71 (95% confidence interval [CI], 0.70 to 0.72). At external validation, the C-index was 0.69 (95% CI, 0.66 to 0.72) and the calibration slope (ie, the agreement between observed outcomes and predictions) was 0.874 (<1). A score chart based on these analyses has been proposed. The formula to calculate the IPAL is the following: gender (F=0; M=4)-(body mass index-24)+2×dyspnea score+pleural adhesion (no=0; yes=4)+pulmonary resection (wedge=0; lobectomy or segmentectomy=7; bilobectomy=11; bulla resection=2; volume reduction=14)+location (lower or middle lobe=0; upper=4). CONCLUSIONS Surgeons can easily use the well-validated model to determine intraoperative preventive measures of PAL.

The impact of hospital and surgeon volume on the 30-day mortality of lung cancer surgery: A nation-based reappraisal

OBJECTIVE Our objective was to analyze the time trend variation of 30-day mortality after lung cancer surgery, and to quantify the impact of surgeon and hospital volumes over a 5-year period in France. METHODS We used Epithor, the French national thoracic database and benchmark tool, which catalogues more than 180,000 procedures of 89 private and public hospitals in France. From January 2005 to December 2010, 19,556 patients who underwent major lung resection (lobectomy, bilobectomy, pneumonectomy) were included in our study. Multilevel logistic models were designed to investigate the relationship between 30-day mortality and surgeon (model 1) or hospital (model 2) volumes. The 3 levels considered were the patient, the surgeon, and the hospital. RESULTS From 2005 to 2007, the 30-day mortality of patients who underwent major lung resection averaged 10%, and then decreased until it reached 3.8% in 2010 (P < .0001). A significant decrease in 30-day mortality was observed over time (P = .0046). During the study period, the mean annual number of procedures per surgeon was 46.1 (standard deviation [SD] = 23.6) and per hospital was 97.9 (SD = 50.8). Model 1 showed that surgeon volume had a significant impact on 30-day mortality (P = .03), whereas model 2 failed to show that hospital volume influenced 30-day mortality (P = .75). CONCLUSIONS Since 2007, when Frances first National Cancer Plan became effective, 30-day mortality of primary lung cancer surgery has decreased and currently measures 3.8%. Low mortality was correlated with higher surgeon volume but was not influenced by hospital volume, which cannot be considered a proxy measure for determining the safety of lung cancer surgery.

Number of mediastinal lymph nodes in non-small cell lung cancer: a Gaussian curve, not a prognostic factor.

BACKGROUND It has been proposed that examining a greater number of lymph nodes (LNs) in patients with non-small-cell lung cancer (NSCLC) treated by surgical resection may increase the likelihood of proper staging and affect outcome. Our purpose was to evaluate the interindividual variability and prognostic relevance of the number of LNs harvested during complete pulmonary and mediastinal lymphadenectomy performed for NSCLC. METHODS We prospectively collected and retrospectively reviewed the data from 1,095 patients who underwent lung cancer resection in association with systematic lymphadenectomy and pulmonary and mediastinal LN counts from 2004 to 2009. We analyzed the interindividual variability and prognostic impact of the number of LNs on overall survival (OS). RESULTS The mean number of harvested pulmonary and mediastinal LNs was 17.4±7.3 (range, 1-65) and was higher in male patients, right lung surgical procedures, lobectomy and pneumonectomy, N2 disease, and pIII stage. The mean number of harvested mediastinal LNs was 10.7±5.6 and was normally distributed (range, 0-49; median, 10). The 5-year survival rate was 53.8%. Overall survival was influenced by the number of involved stations (single-station versus multi-station disease, 5-year survival rates 31.5% versus 16.9%, respectively; p=0.041) but not by the number of harvested LNs, the number of harvested mediastinal LNs, or the number of positive mediastinal LNs. CONCLUSIONS After lung cancer resection and complete lymphadenectomy, the number of LNs is subject to normally distributed interindividual variability, with no significant impact on OS. Recommending an optimal number of nodes is therefore arbitrary. Instead, our recommendation is to perform a complete systematic pulmonary and mediastinal lymphadenectomy following established anatomical boundaries.

Are postoperative consequences of neoadjuvant chemotherapy for non-small cell lung cancer more severe in elderly patients?

OBJECTIVES The purpose of this study was to assess the postoperative morbidity of patients ≥75 years with non-small cell lung cancer (NSCLC) who underwent neoadjuvant chemotherapy, comparing them to younger patients. METHODS We performed a case-control study over a 5-year period using Epithor, the French Society of Thoracic and Cardiovascular Surgery database, including to date more than 160,000 procedures from 103 institutions. We collected prospectively the data concerning 1510 patients with NSCLC who underwent preoperative chemotherapy, from January 2005 to December 2009. In order to compare patients with similar characteristics, we matched the 81 patients ≥75 to 81 controls (<75) for gender, American Society of Anesthesia (ASA) score, Performance Status (PS), Forced Expiratory Volume (FEV1) and histological subtype of the tumor. The patients of the control group were randomized within the 1429 patients <75 included. Lung cancer surgical treatment, post-operative morbidity and mortality rates, and length of stay (LOS) were compared between the two age groups. RESULTS There was no significant difference in type of resection between the two groups (p=0.07): pneumonectomy 15% (n=12) for patients ≥75 vs 28% (n=23) for younger patients, lobectomy 65% (n=53) vs 54% (n=44), bilobectomy 14% (n=11) vs 6% (n=5) and sub-lobar resection 4% (n=3) for the two groups. There was no significant difference in type of mediastinal lymphadenectomy (p=0.48) between the two age groups. Elderly patients presented a more important number of postoperative complications (p=0.04) and these ones were more severe (p=0.03). There was no significant difference in postoperative mortality with 30-day mortality: 4.9%, n=4, versus 2.5%, n=2, (p=0.83); 60-day mortality: 6.2%, n=5, versus 2.5%, n=2, (p=0.61); and 90-day mortality was the same. Hospital LOS was longer for the elderly (14.9 days, CI95%[12.5;17.4] vs 11.9 days, CI95%[10.7;13.3], p<0.001). CONCLUSION Postoperative morbidity after neoadjuvant chemotherapy is more important in elderly patients. These data should be taken into account when considering the interest of preoperative treatment in elderly patients with resectable NSCLC.

Postoperative morbidity and mortality after pneumonectomy: a 30-year experience of 2064 consecutive patients

OBJECTIVES We examined whether the changes in clinical practice with time correlated with the changes in the 90-day mortality following pneumonectomy. METHODS The clinical records of consecutive patients undergoing pneumonectomy in two French centres from 1980 to 2009 were prospectively collected. The 90-day postoperative course was retrospectively studied according to clinical characteristics, underlying diseases, type of surgery and time-period (1980-1989; 1990-1999 or 2000-2009). RESULTS Pneumonectomy was performed in 2064 patients (right n = 948, males n = 1758, mean age 60 ± 10 years). Indications were non-small-cell lung cancer (n = 1805, 87%), mesothelioma (n = 39, 1.8%), other tumours (n = 132, 6.3%) and non-tumour disease (n = 88, 4.2%). The 30- and 90-day mortality were 17.4 and 7.2% in the first decade, 22.3 and 9% in the second decade and 26.4 and 7.3% in the third decade, respectively. In multivariate analysis, older age, right-sided resection, T3-T4 and N2 lung cancer disease were significantly associated with increased overall 90-day mortality, whereas surgery during the last decade was associated with a better outcome when compared with the first decade (RR: 0.63, 95% confidence interval: 0.50-0.80, P = 0.045). When focusing on patients with non-small-cell lung cancer (NSCLC), the 90-day mortality following induction therapy and pneumonectomy decreased from 21.9% in the 1980s to 8.2% in the 2000s (P = 0.038), while such decrease was not found in patients without induction therapy or in patients undergoing a lobectomy. CONCLUSIONS The overall 90-day mortality after pneumonectomy was not significantly modified over the last 30 years, while the 90-day mortality after induction therapy followed by pneumonectomy for NSCLC decreased significantly.

Quality of life of surgical oncology residents and fellows across Europe.

BACKGROUND Data are currently lacking regarding the quality of life of surgical oncology (SO) trainees. We sought to assess the training conditions and quality of life of SO residents and fellows across Europe. MATERIAL AND METHODS Members of the European Society for Surgical Oncology were invited to complete a Web-based survey that included a questionnaire specifically designed for SO trainees. Demographics, timing, and incentive to choose for SO, quality of life, and symptoms of fatigue, sleepiness, depression, and burnout, as well as self-reported medical errors, were assessed using validated instruments. RESULTS The survey was completed by 109 residents and 53 fellows (mean age 34.6 ± 8.2). The mean Linear Analog Scale Assessment score for quality of life was 34.8 ± 8.6 out of a possible 50. A low level of fatigue was declared by 60% of the trainees. However, 44% scored an abnormal Epworth Sleepiness score, which was mostly related to in-hospital work time and lack of educational programs. High positive screenings regarding depression (51%) and burnout (25%) were associated with resident status and lack of mentorship, respectively. Major medical errors during the last 3 months were self-reported by 20% of the trainees. CONCLUSIONS In Europe, the perceived quality of life is overall acceptable among trainees in SO. However, the present study demonstrated a high level of sleepiness, depression, and burnout symptoms. Additional work is required to identify and overcome the underlying causes of these symptoms.

Mediastinal lymphadenectomy in elderly patients with non-small-cell lung cancer

OBJECTIVES The progressive ageing of the population is accompanied by an increasing incidence of cancer. Our objective was to compare mediastinal lymphadenectomy performed in the surgical treatment of non-small-cell lung cancer (NSCLC) patients between ≥ 70 and <70. METHODS We performed a retrospective single-centre case-control study, including 80 patients ≥ 70 years of age, surgically treated for NSCLC between January 2008 and December 2010, matched 1:1 to 80 younger controls on gender, American Society of Anesthesia score, performance status and histological subtype of the tumour. The number and type of dissected hilar/intrapulmonary and mediastinal lymph node stations as well as the number of resected lymph nodes were compared between the two age groups. RESULTS The type of pulmonary resection was significantly different between the two groups (P = 0.03): pneumonectomy 6% (n = 5) for patients ≥ 70 vs 12% (n = 10) for patients <70, lobectomy 85 (n = 68) vs 65% (n = 52), bilobectomy 1 (n = 1) vs 2% (n = 2) and sub-lobar resection 7 (n = 6) vs 20% (n = 16). There was no significant difference in type of mediastinal lymphadenectomy (radical vs sampling; P = 0.6). Elderly patients presented a more advanced N status of lymph node invasion than younger controls (P = 0.02). The number and type of dissected lymph node stations and the number of lymph nodes were not significantly different between the two age groups (P = 0.66 and 0.25, respectively). The mean number of metastatic lymph nodes was higher in patients ≥ 70 (2.3 vs 1.3 in patients <70; P = 0.002). Lymph node ratio between metastatic and resected lymph nodes was higher in elderly patients (0.11 vs 0.07 in younger controls; P = 0.009). CONCLUSIONS Lymph node involvement in surgically treated NSCLC was more significant in elderly patients ≥ 70 than in younger patients presenting comparable clinical and histopathological characteristics, and undergoing a similar lymphadenectomy.

Délais de prise en charge initiale des patients atteints de cancer bronchique traités en radiothérapie

OBJECTIVE To describe delays in diagnosis and treatment of lung cancer in patients treated by radiotherapy from the first abnormal imaging to the first day of treatment. PATIENTS AND METHODS Our retrospective single-center study included all patients treated for primary lung cancer in our center receiving radiotherapy alone or in association to chemotherapy or surgery, between 1st May and 15th September 2011. RESULTS We included 40 patients. Mean age was 65.3 years and sex ratio was 4 (32 males). In 72.5% (n = 29) of the cases, the objective of the treatment was palliative. Median delay between the first abnormal imaging to the first day of treatment was 75.5 days (CI 95% [63.6-134.4]). Median diagnostic delay to obtain a pathological proof was 38 days (CI 95% [27.9-100]). Median therapeutic delay to start treatment was 31 days (CI 95% [24.6-38.5]). When considering radiotherapy, median delay between multidisciplinary staff decision and first radiotherapy session was 26 days (CI 95% [22.4-33.3]). CONCLUSION The study of the delays in diagnosis and treatment is the first step to reduce them. Detailed analysis helps to propose some measures to improve these delays.