Analysis of trimodal and bimodal therapy in a selective-surgery paradigm for locally advanced oesophageal squamous cell carcinoma.

BACKGROUND: Long-term survival outcomes of trimodal therapy (TMT; chemoradiation plus surgery) and bimodal therapy (BMT; chemoradiation) have seldom been analysed. In a selective-surgery paradigm, the benefit of TMT in patients with a complete clinical response is controversial. Factors associated with survival in patients with a clinical complete response to chemoradiation were evaluated. METHODS: Patients with stage II-III oesophageal squamous cell carcinoma treated with TMT or BMT from 2002 to 2017 were evaluated. The BMT group consisted of patients who were otherwise eligible for surgery but underwent chemoradiation alone followed by observation. This group included patients who later had salvage oesophagectomy. Survival was evaluated and compared between TMT and BMT groups. Elastic net regularization was performed to select co-variables for Cox multivariable survival analysis in patients with a clinical complete response. RESULTS: Of 143 patients, 60 (41.9 per cent) underwent TMT and 83 (58.0 per cent) BMT. Patients who underwent TMT had longer median overall survival than those who had BMT (77 versus 33 months; P = 0.019). For patients with a clinical complete response, TMT achieved longer median overall survival than BMT (123 versus 55 months; P = 0.04). BMT had a high locoregional recurrence rate (48 versus 6 per cent; P < 0.001); 26 of 29 patients with locoregional recurrence in the BMT groupunderwent salvage resection. Cox multivariable analysis demonstrated that upper-mid oesophageal tumour location (hazard ratio (HR) 2.04; P = 0.024) and tumour length (HR 1.18; P = 0.046) were associated with worse survival. Although TMT was not associated with survival, it was a predictor of reduced recurrence (HR 0.28; P = 0.028). The maximum standardized uptake value after chemoradiation also predicted recurrence (HR 1.33; P < 0.001). CONCLUSION: In patients who achieve a clinical complete response, TMT reduces locoregional recurrence but may not prolong survival. The differences in survival outcomes may be due to patient selection; therefore, a selective-surgery strategy in oesophageal squamous cell carcinoma is a reasonable approach.

Morbidity following salvage esophagectomy for squamous cell carcinoma: the MD Anderson experience.

The survival advantage associated with the addition of surgical therapy in esophageal squamous cell carcinoma (ESCC) patients who demonstrate a complete clinical response to chemoradiotherapy is unclear, and many institutions have adopted an organ-preserving strategy of selective surgery in this population. We sought to characterize our institutional experience of salvage esophagectomy (for failure of definitive bimodality therapy) and planned esophagectomy (as a component of trimodality therapy) by retrospectively analyzing patients with ESCC of the thoracic esophagus and GEJ who underwent esophagectomy following chemoradiotherapy between 2004 and 2016. Of 76 patients who met inclusion criteria, 46.1% (35) underwent salvage esophagectomy. Major postoperative complications (major cardiovascular and pulmonary events, anastomotic leak [grade ≥ 2], and 90-day mortality) were frequent and occurred in 52.6% of the cohort (planned resection: 36.6% [15/41]; salvage esophagectomy: 71.4% [25/35]). Observed rates of 30- and 90-day mortality for the entire cohort were 7.9% (planned: 7.3% [3/41]; salvage: 8.6% [3/35]) and 13.2% (planned: 9.8% [4/41]; salvage: 17.1% [6/35]), respectively. In summary, esophagectomy following chemoradiotherapy for ESCC at our institution has been associated with frequent postoperative morbidity and considerable rates of mortality in both planned and salvage settings. Although a selective approach to surgery may permit organ preservation in many patients with ESCC, these results highlight that salvage esophagectomy for failure of definitive-intent treatment of ESCC may also constitute a difficult clinical undertaking in some cases.

Concordance of studies for nodal staging is prognostic for worse survival in esophageal cancer.

Pretreatment clinical staging in esophageal cancer influences prognosis and treatment strategy. Current staging strategies utilize multiple imaging modalities, and often the results are contradictory. No studies have examined the implications of concordance of computed tomography (CT), positron emission tomography (PET), and endoscopic ultrasound (EUS) when used for the evaluation of nodal disease. The objective of this study was to determine if concordance of CT, PET, or EUS for nodal disease predicts worse overall survival. We reviewed 615 esophageal cancer patients with pretreatment CT, PET, and EUS that underwent esophagectomy for survival outcomes based on concordance of studies for nodal disease. Concordant N+ is defined as two or three studies positive for nodal disease; non-concordant N+ is defined as only one positive study. Node-positive disease by any study predicted shorter survival than node-negative disease (42% vs. 73% 5-year survival; P<0.001). Additionally, non-concordant N+ patients had shorter survival than N- patients (52% vs. 73% 5-year survival; P<0.001). Concordant N+ patients had shorter survival than non-concordant N+ patients (38- vs. 61-month median survival; P=0.017). There were no statistically significant differences in survival based on specific combinations of studies. When PET was disregarded, patients with both CT+ and EUS+ had shorter survival than patients with either CT+ or EUS+ (39- vs. 58-month median survival; P=0.029). Pretreatment CT, PET, or EUS concordance for node-positive disease predicts shorter overall survival in patients that undergo esophagectomy for esophageal cancer. Predicting survival in esophageal cancer should consider the synergistic capabilities of CT, PET, and EUS in evaluating nodal status.

Clinical parameters model for predicting pathologic complete response following preoperative chemoradiation in patients with esophageal cancer.

BACKGROUND: Approximately 25% of patients with esophageal cancer (EC) who undergo preoperative chemoradiation, achieve a pathologic complete response (pathCR). We hypothesized that a model based on clinical parameters could predict pathCR with a high (≥60%) probability. PATIENTS AND METHODS: We analyzed 322 patients with EC who underwent preoperative chemoradiation. All the patients had baseline and postchemoradiation positron emission tomography (PET) and pre- and postchemoradiation endoscopic biopsy. Logistic regression models were used for analysis, and cross-validation via the bootstrap method was carried out to test the model. RESULTS: The 70 (21.7%) patients who achieved a pathCR lived longer (median overall survival [OS], 79.76 months) than the 252 patients who did not achieve a pathCR (median OS, 39.73 months; OS, P = 0.004; disease-free survival, P = 0.003). In a logistic regression analysis, the following parameters contributed to the prediction model: postchemoradiation PET, postchemoradiation biopsy, sex, histologic tumor grade, and baseline (EUS)T stage. The area under the receiver-operating characteristic curve was 0.72 (95% confidence interval [CI] 0.662-0.787); after the bootstrap validation with 200 repetitions, the bias-corrected AU-ROC was 0.70 (95% CI 0.643-0.728). CONCLUSION: Our data suggest that the logistic regression model can predict pathCR with a high probability. This clinical model could complement others (biomarkers) to predict pathCR.

Patients with high body mass index tend to have lower stage of esophageal carcinoma at diagnosis.

High body mass index (H-BMI; ≥25 kg/m(2) ) is common in US adults. In a small cohort of esophageal cancer (EC) patients treated with surgery, H-BMI and diagnosis of early stage EC appeared associated. We evaluated a much larger cohort of EC patients. From a prospectively maintained database, we analyzed 925 EC patients who had surgery with or without adjunctive therapy. Various statistical methods were used. Among 925 patients, 69% had H-BMI, and 31% had normal body mass index (<25 kg/m(2) ; N-BMI). H-BMI was associated with men (P<0.001), Caucasians (P=0.064; trend), lower esophageal localization (P<0.001), adenocarcinoma histology (P<0.001), low baseline cT-stage (P=0.003), low baseline overall clinical stage (P=0.003), coronary artery disease (P=0.036), and diabetes (P<0.001). N-BMI was associated with weight loss (P<0.001), alcohol abuse (P=0.056; trend), ever/current smoking (P=0.014), and baseline cN+ (P=0.018). H-BMI patients with cT1 tumors (n=110) had significantly higher rates of gastresophageal reflux disease symptoms (P<0.001), gastresophageal reflux disease history (P<0.001), and Barrett's esophagus history (P<0.001) compared with H-BMI patients with cT2 tumors (n=114). Median survival of N-BMI patients was 36.66 months compared with 53.20 months for H-BMI patients (P=0.005). In multivariate analysis, older age (P<0.001), squamous histology (P=0.002), smoking (P=0.040), weight loss (P=0.002), high baseline stage (P<0.001), high number of ypN+ (P=0.005), high surgical stage (P<0.001), and American Society of Anesthesia scores, three out of four (P<0.001) were independent prognosticators for poor overall survival. We were able to perform propensity-based analysis of surgical complications between H-BMI and N-BMI patients. A comparison of fully matched 376 patients (188 with H-BMI and 188 with N-BMI) found no significant differences in the rate of complications between the two groups. This larger data set confirms that a fraction of H-BMI patients with antecedent history is diagnosed with early baseline EC. Upon validation of our data in an independent cohort, refinements in surveillance of symptomatic H-BMI patients are warranted and could be implemented. Our data also suggest that H-BMI patients do not experience higher rate of surgical complications compared with N-BMI patients.

Is video-assisted thoracoscopic surgery superior to limited axillary thoracotomy in the management of spontaneous pneumothorax?

OBJECTIVE: To evaluate bullectomy and pleurectomy in the treatment of spontaneous pneumothorax (PNO) using video-assisted thoracoscopic surgery (VATS), and to compare the outcome with that of the same procedure performed using limited axillary thoracotomy (LAT). DESIGN: A retrospective case series with patient follow-up. SETTING: A Canadian tertiary care hospital. PATIENTS: The medical records of all patients with a spontaneous PNO treated by either VATS or LAT at the Ottawa Hospital - General Campus, Ottawa, Ontario, between April 1993 and August 1999 were reviewed, and the patients were subsequently interviewed. MAIN OUTCOME MEASURES: Operative details (length of operation, operative complications); postoperative details (duration of chest tube, length of hospital stay, duration of analgesia, pain, time missed from work, complications, recurrence rate); and cost (hospital and operative, socioeconomic [time missed from work]). RESULTS: Fifty patients were identified who had had surgical treatment of a spontaneous PNO. Twenty-eight patients were treated by LAT and 22 underwent VATS. The median length of follow-up was 44.6 months (range four to 81.5 months). Three patients developed a recurrent PNO - two patients after LAT and one patient after VATS. No difference was found between the two groups in the operating time or in the amount of pain experienced immediately after surgery. However, patients who underwent VATS had a shorter length of stay (P=0.002) and a shorter requirement for analgesics postoperatively (P=0.03). Overall, the total cost of VATS was no different than that for LAT; however, in terms of socioeconomic costs, patients in the VATS group missed significantly less time from work postoperatively (P=0.02). CONCLUSIONS: VATS offers a cost effective and better tolerated procedure for the management of spontaneous PNO than the time-honoured open technique.

Thoracic complications of Lemierre syndrome.

Lemierre syndrome is a severe, septicemic illness most commonly caused by the anaerobic Gram-negative bacillus Fusobacterium necrophorum. It is characterized by an acute oropharyngeal infection, with secondary septic thrombophlebitis of the internal jugular vein and frequent metastatic infections. This report of a patient with the Lemierre syndrome is complemented by a review of the literature on the subject.

Inadvertent suture through the chest tube: a simple solution to a frustrating problem.

Although an uncommon complication, inadvertent suturing of the chest tube to the chest wall during closure of a thoracotomy, unfortunately can happen. This frustrating situation likely leads to a rethoracotomy and cutting of the suture in order to release the chest tube. In this report, we propose a fast and easy solution to this problem.

Late complications. Postpneumonectomy syndrome.

Postpneumonectomy syndrome is an unusual complication of pneumonectomy characterized by excessive mediastinal displacement towards the empty pleural space with secondary tracheobronchial compression. Successful management involves repositioning of the mediastinum through the use of an intrapleural prosthesis.

Cholelithoptysis and pleural empyema.

We report a case of delayed cholelithoptysis and pleural empyema caused by gallstone spillage at the time of laparoscopic cholecystecomy. An occult subphrenic abscess developed, and the patient became symptomatic only after trans-diaphragmatic penetration occurred. This resulted in expectoration of bile, gallstones, and pus. Spontaneous decompression of the empyema occurred because of a peritoneo-pleuro-bronchial fistula. This is the first case of such managed nonoperatively and provides support for the importance of intraoperative retrieval of spilled gallstones at the time of laparoscopic cholecystectomy.

Postpneumonectomy syndrome with an ipsilateral aortic arch after left pneumonectomy.

BACKGROUND: Previous reports have described bronchial obstruction after left pneumonectomy (so-called post-pneumonectomy syndrome) in the presence of a right aortic arch with the bronchus being compressed between the ascending aorta and thoracic spine. This study reports on 4 patients with left postpneumonectomy syndrome in the presence of a normally located left aortic arch and ascending thoracic aorta. METHODS: The case histories of 4 patients with this syndrome were reviewed and several features common to all 4 were noted. In each case, the obstruction was thought to be due to a clockwise rotation of the mediastinum with bronchial compression occurring between the right main pulmonary artery and thoracic spine. RESULTS: Three patients were treated by repositioning of the mediastinum, and all 3 obtained relief of their dyspnea. In these cases, permanent repositioning was ensured by the insertion of a prosthesis filled with saline solution. The fourth patient was successfully treated by resection of a portion of the adjacent thoracic vertebra. CONCLUSIONS: Postpneumonectomy syndrome can occur after a left pneumonectomy in the absence of a right aortic arch. We suggest that mediastinal repositioning with a prosthesis filled with saline solution is simple, is safe, and results in complete relief of preoperative symptoms.

Indications for surgery and patient work-up for bullectomy.

Bullectomy can be associated with significant improvement in dyspnea as long as patients are appropriately selected. This selection process begins with clinical history and determination of the size and location of the bulla. If a patient has a smaller bulla, which is less than 30% of the volume of the hemithorax, the dyspnea is unlikely to be related to the bulla and its excision is probably not indicated. Laros et al determined that for successful bullectomy, the bulla must occupy at least 50% of the hemithorax and show definite displacement of adjacent lung tissue. In addition, there must be no vanishing lung syndrome nor chronic purulent bronchitis. Wesley et al added that there should be radiologic evidence of compressed lung tissue that can be re-expanded by removal of the bulla, and that there should be evidence of regional imbalance with poor perfusion on the side of the bulla and relatively good perfusion on the contralateral side.

The use of endoprosthesis in the palliation of esophageal carcinoma.

Dilatation and palliative intubation of esophageal cancer is probably one of the most dangerous operations in esophageal surgery. For a significant portion of patients, it provides a valuable improvement in the comfort of swallowing. Current techniques of intubation are reviewed, as well as their morbidity and mortality.

Survival related to nodal status after sleeve resection for lung cancer.

Sleeve lobectomy is a lung-saving procedure indicated for central tumors for which the alternative is a pneumonectomy. The relation between survival and nodal status is controversial because, in most series, the presence of N1 disease adversely affects the prognosis with few or no long-term survivors. During the period 1972 to 1992, 142 patients underwent sleeve resection for lung cancer at our institution. Mean age (+/- standard deviation) was 60.7 +/- 9.1 years (range 11 to 78 years), and indications for operation were a central tumor in 112 patients (79%), a peripheral tumor in 18 patients (13%), and compromised pulmonary function in 12 patients (8%). Histologic type was predominantly squamous (72.5%) followed by nonsquamous (24.6%) and carcinoid tumors (2.8%). Resection was complete in 124 patients (87%) and incomplete in 18 (13%), and the operative mortality was 2.1% (n = 3). Follow-up was complete for the 139 remaining patients. Including operative deaths, survivals at 5 and 10 years for all patients were 46% (95% confidence intervals 38% to 55%) and 33% (95% confidence intervals 24% to 42%), respectively. For patients with N0 status (n = 73), 5- and 10-year survivals were 57% (95% confidence intervals 45% to 69%) and 46% (95% confidence intervals 32% to 60%); for patients with N1 status (n = 55), these rates were 46% (95% confidence intervals 32% to 60%) and 27% (95% confidence intervals 14% to 40%) (p = 0.13). No patient with N2 status (n = 14) survived 5 years. Local recurrences occurred in 23% of cases, but the prevalence was not statistically different between patients with N0 disease (16.6%) and N1 disease (23.1%) (p = 0.43). These data suggest that sleeve resection is an adequate operation for patients with resectable lung cancer and N0 N1 status. The presence of N2 disease significantly worsens the prognosis and may contraindicate the use of the procedure.

Staging and management of lung cancer: sleeve resection.

Sleeve lobectomy is a lung-saving procedure usually indicated for central tumors for which the alternative is a pneumonectomy. It preserves normal lung tissue and may enable pulmonary resection to be done in selected patients with inadequate cardiac or pulmonary reserve. One experience extends from January 1972 to December 1991, during which time 142 patients underwent a variety of sleeve resections for bronchogenic neoplasms. The majority of operations were upper-lobe sleeve resections (N = 110) and most procedures were considered complete and potentially curative (87%). There were three postoperative deaths (surgical mortality of 2.5%) and prolonged atelectasis was the most common major complication (N = 9). Follow-up was complete for the 139 survivors (mean follow-up time of 2,149 days) and overall survival was 46% at 5 years and 33% at 10 years. Five- and 10-year survivals for patients with stage I disease were 63% and 52%, respectively, while only 14% of patients with stage III disease survived 5 years. Local recurrences occurred in 23% of patients but when the resection had been complete, this incidence was 17% (21/124). These results indicate that sleeve resection is an adequate cancer operation for both compromised and uncompromised patients. Operative mortality, survival, and incidence of local recurrence are not different than what is seen after more conventional procedures.

Leeches: controlled trial in venous compromised rat epigastric flaps.

Leeches were studied for their efficacy to improve survival of venous compromised rat skin flaps. In 22 rats, bilateral epigastric island flaps were created and subjected to 6 h of venous occlusion. One flap in each animal was randomised to leech treatment, while the contralateral flap served as its own control. Flap survival, leech feeding time, weight gained by the leech and bleeding time from leech bites were measured. The area of flap survival was significantly increased in leech treated flaps compared to contralateral controls (n = 22 pairs, p = 0.03; Wilcoxon signed rank test). Weight gained in the feeding leech averaged 1.3 +/- 0.2 g (n = 18). Leech feeding time was 107 +/- 13 min (n = 18). Bleeding time from each leech bite averaged 79 +/- 12 min (n = 18). Hence, the extent of flap necrosis resulting from venous impairment can be partly diminished by leech treatment until definitive surgical venous revascularisation.

Evaluation of muscle flaps in the treatment of infected aortic grafts.

Standard therapy for abdominal aortic graft infection involving resection of the graft and extraanatomic bypass carries significant morbidity and mortality rates. The present study evaluates the feasibility of combining in situ graft replacement with a highly vascular tissue flap as an alternative to this problem. In 52 pigs a segment of a polytetrafluoroethylene graft was interposed in the infrarenal abdominal aorta. Staphylococcus aureus was used to infect the graft. One week later the animals were divided into six treatment groups. Group 1 (control) had debridement of the retroperitoneum only; group 2 had debridement with replacement of the graft; group 3 consisted of animals with the infected graft left in place and the graft wrapped with a rectus abdominis flap; group 4 is similar to group 3 except the seromuscularis of the jejunum was used to wrap the infected graft; in group 5 the graft was changed, and a rectus abdominis island flap was wrapped around the graft; and finally, group 6 was similar to group 5 except that the flap was obtained from the seromuscularis of the jejunum. Two weeks later, graft patency and infection status were assessed at reoperation. The incidence of graft infection was significantly reduced in groups 5 (0 of 10; p less than 0.01) and 6 (1 of 10; p less than 0.02) compared with group 1 (7 of 10), and the incidence of graft thrombosis was also greatly reduced in groups 5 (2 of 10) and 6 (1 of 10) versus group 1 (10 of 10; p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)