Endobronchial Ultrasonography to Assess and Evaluate Tracheobronchial Tree Invasion in cT4b Esophageal Cancer Patients Treated with Definitive Chemoradiotherapy: Assessment of Resectability

BACKGROUND

In cT4b esophageal cancer, accurate assessment of tracheobronchial tree invasion after definitive chemoradiotherapy (dCRT) aids in the selection of patients for whom an oncologic radical esophagectomy can be achieved. The current report aimed to determine the accuracy of endobronchial ultrasound in assessing tumor invasion in the tracheobronchial tree after dCRT in patients with cT4b esophageal cancer.

METHODS

Esophageal cancer patients with suspicion of tracheobronchial tree invasion on the diagnostic contrast-enhanced computed tomography (CT) who underwent a staging endobronchial ultrasonography (EBUS) were eligible for inclusion in this study. To assess the accuracy of the EBUS in assessing tumor ingrowth in the tracheobronchial tree after dCRT, patients who had an EBUS during restaging and underwent surgery were included in the final analysis.

RESULTS

The final analysis included 26 patients. For 18 (90%) of 20 patients in whom the anatomy of the tracheobronchial tree was restored on the restaging EBUS and tumor invasion was considered to be absent, a radical esophagectomy was achieved. In six patients, persistent ingrowth was observed during the restaging EBUS. For these patients, the EBUS was repeated after a median of 9 weeks. Tumor invasion was considered to be absent in four patients, and a radical resection was achieved in three of these patients.

CONCLUSION

The EBUS provides valuable information on the assessment of tracheobronchial tree invasion in cT4b esophageal cancer patients after dCRT. This information could aid in the proper selection of patients who benefit from a curative but highly invasive esophagectomy.

[Robotic esophageal surgery]

Robot-assisted minimally invasive esophagectomy (RAMIE) is increasingly becoming established as a standard procedure in surgical centers for esophagectomy in cases of cancer. To date, RAMIE has been shown to have fewer postoperative complications and at least equivalent oncological outcomes compared with open resection. Compared with classical minimally invasive resection, there seem to be fewer cases of postoperative pneumonia after RAMIE. In addition, a higher number of harvested lymph nodes could lead to better oncological long-term outcomes. The learning curve for this complex surgical procedure is relatively shallow but can be greatly reduced at high-volume centers through special training and proctoring programs. Robotic surgical approaches have also been described for other esophageal diseases; however, no clear superiority compared to laparoscopic surgery has so far been shown.

Comparison of Clinical Outcomes of Robot-Assisted, Video-Assisted, and Open Esophagectomy for Esophageal Cancer: A Systematic Review and Meta-analysis

IMPORTANCE

The utilization of robot-assisted minimally invasive esophagectomy (RAMIE) for esophageal cancer is increasing, despite limited data comparing RAMIE with other surgical approaches.

OBJECTIVE

To evaluate the literature for clinical outcomes of RAMIE compared with video-assisted minimally invasive esophagectomy (VAMIE) and open esophagectomy (OE).

DATA SOURCES

A systematic search of PubMed, Cochrane, Ovid Medline, and Embase databases from January 1, 2013, to May 6, 2020, was performed.

STUDY SELECTION

Studies that compared RAMIE with VAMIE and/or OE for cancer were included.

DATA EXTRACTION AND SYNTHESIS

Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guideline, data were extracted by independent reviewers. A random-effects meta-analysis of 9 propensity-matched studies was performed for the RAMIE vs VAMIE comparison only. A narrative synthesis of RAMIE vs VAMIE and OE was performed.

MAIN OUTCOMES AND MEASURES

The outcomes of interest were intraoperative outcomes (ie, estimated blood loss [EBL], operative time, lymph node [LN] harvest), short-term outcomes (anastomotic leak, recurrent laryngeal nerve [RLN] palsy, pulmonary and total complications, and 90-day mortality), and long-term oncologic outcomes.

RESULTS

Overall, 21 studies (2 randomized clinical trials, 11 propensity-matched studies, and 8 unmatched studies) with 9355 patients were included. A meta-analysis was performed with 9 propensity-matched studies comparing RAMIE with VAMIE. The random-effects pooled estimate found an adjusted risk difference (RD) of -0.06 (95% CI, -0.11 to -0.01) favoring fewer pulmonary complications with RAMIE. There was no evidence of differences between RAMIE and VAMIE in LN harvest (mean difference [MD], -1.1 LN; 95% CI, -2.45 to 0.25 LNs), anastomotic leak (RD, 0.0; 95% CI, -0.03 to 0.03), EBL (MD, -6.25 mL; 95% CI, -18.26 to 5.77 mL), RLN palsy (RD, 0.01; 95% CI, -0.08 to 0.10), total complications (RD, 0.05; 95% CI, -0.01 to 0.11), or 90-day mortality (RD, -0.01; 95% CI, -0.02 to 0.0). There was low certainty of evidence that RAMIE was associated with a longer disease-free survival compared with VAMIE. For OE comparisons (data not pooled), RAMIE was associated with a longer operative time, decreased EBL, and less pulmonary and total complications.

CONCLUSIONS AND RELEVANCE

In this study, RAMIE had similar outcomes as VAMIE but was associated with fewer pulmonary complications compared with VAMIE and OE. Studies on long-term functional and cancer outcomes are needed.

Robotic esophagomyotomy for achalasia: technical note and review of the literature

INTRODUCTION

The treatment of achalasia has undergone continuous evolution with the advancement of technology. Since the beginning of the new millennium, the employment of robotics has led to technical facilitation with the execution of the myotomy and consequently to improvement of outcomes and decrease perioperative morbidity.

EVIDENCE ACQUISITION

We provide a detailed description of the surgical procedure and the perioperative management together with a literature search of Electronic PubMed/Medline database and Cochrane Library. English written studies on robotic assisted myotomy (case reports, reviews, single arm and comparative studies) were included.

EVIDENCE SYNTHESIS

Between 2001 and 2020, 10 case reports, 13 single arm studies, 10 comparative studies, 2 meta-analysis, 11 reviews and 2 technical notes on robotic assisted esophagomyotomy for achalasia were published.

CONCLUSIONS

As reported by the studies available in the literature and evaluated in this manuscript, robotic assisted cardiomyotomy seems not only feasible but also a safer operation compared with traditional laparoscopic Heller myotomy, due to a significant lower incidence of intraoperative esophageal perforation. Also if large and randomized controlled studies are advocated, robotic assisted esophagocardiomyotomy might be considered superior to laparoscopic Heller myotomy that, until now, is mostly considered the gold standard in the surgical treatment of achalasia.

[Initial experience of robot-assisted minimally invasive McKeown esophagectomy]

OBJECTIVE

To report our initial experience of robot-assisted McKeown esophagectomy with stapled cervical esophagogastrostomy.

MATERIAL AND METHODS

There were 5 robot-assisted McKeown esophagectomies in patients with benign end-staged and malignant diseases of the esophagus for the period from October 2019 to February 2020.

RESULTS

No conversions and intraoperative complications were observed. Mean surgery time was 406±48 min, total intraoperative blood loss - 108±45 ml. Four patients had minor complications (wound infection, atelectasis, pneumothorax) that required conservative treatment. We have controlled anastomosis in 2-3 postoperative days with water-soluble contrast, none patient had an anastomotic leakage. Mean hospital-stay was 5 days. Complete (R0) resection was accomplished in all patients with malignant neoplasms.

CONCLUSIONS

Our first experience showed that robot-assisted McKeown esophagectomy is a safe and feasible surgical option for esophageal diseases. Robot-assisted interventions require advanced endoscopic surgical experience.