Thoracic Duct Lymphography by Near-Infrared Indocyanine Green Fluorescence imaging in Thoracic Surgery. A Review.

Near-infrared (NIR) fluorescence imaging with indocyanine green dye (ICG) is an emerging technology in detecting the anatomy of the thoracic duct; hence, it can be useful for the identification of the thoracic duct in real time and prevention of its injury during thoracic surgery. It helps to localize thoracic duct injury, identifying chyle leaks in difficult, recurrent, and refractory cases. This review paper provides insights regarding the current applications, advantages, and potential developments of NIR fluorescence imaging with ICG in recognizing thoracic duct during thoracic surgery.

Blumer's Shelf on Laparoscopy.

Blumer's shelf indicates metastatic tumor deposit in rectouterine, or rectovesical pouch on digital rectal or vaginal examination, frequently from stomach, pancreatic, colon, or lung cancer. It underscores the need to carry out  a thorough clinical examination. Though it is much discussed and described in the literature, there are hardly any article or image about its appearance  on laparoscopy. We describe a case  of gastric cancer with Blumer's shelf and its appearance on laparoscopy with clinical and radiological correlation.

Minimally Invasive Esophagectomy the Standard of Care: Experience from a Tertiary Care Cancer Center from India.

For localized esophageal cancer, esophageal resection remains the prime form of treatment but is a highly invasive procedure associated with prohibitive morbidity. Minimally invasive esophagectomy (MIE) by laparoscopic or thoracoscopic approach was therefore introduced to reduce surgical trauma and its associated morbidity. We thereby review our minimally invasive esophagectomy results with short- and long-term outcomes. From January 2010 through December 2016, 459 patients with carcinoma esophagus and gastro-esophageal junction undergoing minimally invasive esophagectomy were retrospectively reviewed. The morbidity, mortality data with short- and long-term results of the procedure were studied. Patients were stratified into two arms based on the approach into minimally invasive transhiatal esophagectomy (MI-THE) and minimal invasive transthoracic esophagectomy TTE (MI-THE). Thirty days mortality in the whole cohort was 3.5% (2.5% in MI-THE vs. 5% in MI-TTE arm). Anastomotic leak rates (5 vs. 4.9%), median intensive care unit (ICU) stay (4 days), hospital stay (9 days), were similar between both the approaches. Major pulmonary complications were significantly higher in MI-TTE arm (18.9% vs 12.5%) (p 0.047). Cardiac, renal, conduit-related complication rates, vocal cord palsy, chyle leak, re-exploration, and late stricture rates were similar between the groups. The median number of nodes resected was higher in the MI-TTE arm (14 vs. 12) (p 0.002). R0 resection rate in the entire cohort was 89% (87.4% in MI-THE, 92% in MI-TTE arm p 0.12). The median overall survival and disease-free survival were also not different between MI-THE and MI-TTE arms (34 vs. 38 months, p 0.64) (24 vs. 36 months, p 0.67). Minimally invasive esophagectomy either by transhiatal or transthoracic approach is feasible and can be safely accomplished with a low morbidity and mortality and with satisfactory R0 resection rates, good nodal harvest, and acceptable long-term oncological outcomes.

Fluorescence-guided cancer surgery-A new paradigm.

Fluorescence-guided surgery is an emerging and promising operative adjunct to assist the surgeon in various aspects of oncosurgery, ranging from assessing perfusion, identification, and characterization of tumors and peritoneal metastases, mapping of lymph nodes/leaks, and assistance for fluorescence-guided surgery (FGS). This study aims to provide an overview of principles, currently available dyes, platforms, and surgical applications and summarizes the available literature on the utility of FGS with a focus on abdomino-thoracic malignancies.

Influence of neoadjuvant therapy on outcomes in patients with resectable carcinoma of esophagus and gastro-esophageal junction from a tertiary cancer care center in India.

BACKGROUND AND OBJECTIVES: The aim of this study is to compare the outcomes of neoadjuvant chemotherapy (nCT), neoadjuvant chemoradiotherapy (nCRT) followed by surgery to upfront surgery (surgery alone) in patients with resectable carcinoma of the esophagus (esophageal cancer [EC]), and gastro-esophageal junction (GEJ) in a limited resource setting. METHODS: A retrospective analysis of a prospectively maintained database was performed to identify patients (from January 2010 through December 2016) who underwent surgery for EC and GEJ cancers. RESULTS: A total of 454 patients were included and categorized into the following groups: nCT (n = 65), nCRT (n = 152) and upfront surgery (n = 237). Squamous cell carcinoma and adenocarcinoma accounted for two-thirds and one-third of the cases, respectively. nCRT group patients were also noted to have smaller tumors, lower margin positivity and a higher R0 resection rates. With a median follow up of 76 months (35-118 months) improved 5-year overall survival was noted in nCRT group in comparison to nCT and upfront surgery groups (56.5% vs. 34% and 35%, respectively, p = .021). CONCLUSIONS: The results of our study demonstrate the beneficial effect of nCRT for patients with EC and GEJ in a limited resource setting. Further studies are required to analyze and promote the benefits of nCRT in limited-resource settings.

Laparoscopic Repair of Acute Post-Esophagectomy Diaphragmatic Herniation Following Minimal Access Esophagectomy.

This study's objective was to assess the presentation, incidence, operative approach, and outcomes of acute symptomatic post-esophagectomy diaphragmatic hernia (PEDH), following minimal access esophagectomy (MAE) for esophageal and gastro-esophageal junctional cancer. Between January 2010 and December 2020, all consecutive patients undergoing esophagectomy were retrospectively analyzed. Acute symptomatic PEDH occurred in 4 patients out of 680 consecutive patients undergoing esophagectomy (0.58%) and 636 MAE (0.63%). All patients were men, with a median age of 56.5 years, and underwent minimal access transhiatal resection. The presentation was varied; 2 had restlessness, agitation, and tachycardia; one acute respiratory distress; and the last was asymptomatic but had reduced air entry over left hemithorax with unexplained hypoxia. All had transverse colon herniation into the left hemithorax. Herniated viscera were reduced with closure of hiatal defect, 3 underwent laparoscopic repair, and one needed laparotomy. Meshplasty or bowel resection was not required. The median hospital stay was 9 days with no perioperative mortality. The major complications (Clavien-Dindo grade ≥ IIIa) occurred in 2 patients. One patient was lost to follow-up, 2 died of disease after a year and 15 months post-procedure, and one is doing well at 10 months without any relapse of hernia. Acute symptomatic PEDH is a rare complication after transhiatal esophagectomy and mainly occurs in the left hemithorax. The incidence appears to be less than 1% after MAE. Laparoscopic repair is feasible in most cases. We recommend routine assessment of hiatus and tightening of hiatus to snuggly accommodate the gastric conduit.

The Utility of Indocyanine Green Angiography in the Assessment of Perfusion of Gastric Conduit and Proximal Esophageal Stump Against Visual Assessment in Patients Undergoing Esophagectomy: a Prospective Study.

Post esophagectomy anastomotic leakage is a crucial factor in determining morbidity and mortality. Good vascularity of the gastric conduit is essential to avoid this complication. This prospective study compares the utility of intraoperative indocyanine green (ICG) fluorescence angiography and visual assessment in assessing the vascularity of gastric conduit and proximal esophageal stump in patients undergoing esophagectomy. Thirteen consecutive patients who underwent esophagectomy for carcinoma middle, lower third esophagus or gastro-esophageal junction from August 2019 to September 2019 were included. Three patients underwent laparoscopic-assisted transhiatal esophagectomy, ten thoraco-laparoscopic-assisted esophagectomy. Reconstruction was done by gastric pull-up via posterior mediastinal route. All patients underwent assessment of perfusion of gastric conduit and proximal esophageal stump by ICG angiography and by visual assessment based on inspection of the color, the palpation of warmth, pulse, and bleeding from the edges. Visual assessment revealed the tip of the gastric conduit was dusky and ischemic in 11 patients, pink and well perfused in two. ICG fluorescence imaging showed inadequate perfusion at the tip of conduit in 12 patients, adequate in one, overall requiring revision in 12 cases. There was a discrepancy in one patient where visual inspection showed adequate perfusion, but ICG disclosed poor vascularity requiring revision of the conduit's tip. Resection of the devitalized portion of the proximal esophageal stump was needed in 5 patients both by visual and by ICG assessment. The median time to appearance of blush from the time of injection of dye was 15 s (10 to 23 s). In all the cases, the pattern of blush was simultaneous, with the concurrent appearance of ICG blush in the gastric conduit and gastro-epiploic arcade. No anastomotic leaks were noted. Visual inspection of the gastric conduit vascularity can underestimate perfusion and hence can compromise resection of the devitalized part. ICG fluorescence imaging is an accurate and promising means to ascertain the vascularity of gastric conduit during an esophagectomy. But its utility needs to be validated in randomized trials.

Single-Dose Prophylactic Antibiotic Versus Extended Usage for Four Days in Clean-Contaminated Oncological Surgeries: a Randomized Clinical Trial.

The optimal duration of prophylactic antimicrobial usage in clean-contaminated elective oncological surgeries is not clear. This single-center randomized trial evaluated the effectiveness of single-dose antimicrobial prophylaxis in clean-contaminated surgeries for the reduction of surgical site infection (SSI). Between April 2018 and January 2019, 315 patients undergoing major oncological clean-contaminated surgeries where the gastrointestinal or genital tract was opened under controlled conditions were randomized into 2 groups i.e., single dose versus extended dose groups. The single dose group received a 1.5 g dose of cefuroxime immediately before surgery while the extended group received the same dose of cefuroxime thrice daily for 4 days from the day of surgery till postoperative day 3. In addition, patients undergoing esophageal and colorectal surgeries received metronidazole. The overall SSI rate of the single dose group was not significantly different from that of the extended group (11.3% vs. 14.7%, respectively, p 0.40), with absolute difference of 3.4% and relative risk of 0.85 (95% C.I, 0.59 to 1.22). The rate of remote site infection was also not different between the two groups (14.4% vs 10.2%, p 0.31) with absolute difference of 4.2% and relative risk 1.19 (95% C.I, 0.89 to 1.59). In univariate analysis, parameters like nodal dissection, colorectal surgery, smoking, and hospital stay were significantly associated with SSI. In multivariate analysis, age, smoking, nodal dissection, and hospital stay retained significance. Single-dose antimicrobial prophylaxis is as effective as extended usage for 4 days in the prevention of postoperative SSI in patients undergoing clean-contaminated major oncological surgeries. Trial was registered with the clinical trial registry of India (CTRI/2018/06/014344).

Flickering diaphragm sign, an indicator of laparoscopy-associated pneumothorax secondary to pleural breach.

During laparoscopic mobilisation of the oesophagus around hiatus in transhiatal oesophagectomy; commonly the pleura is breached causing iatrogenic pneumothorax. Often small breaches in pleura goes unnoticed till the attention is drawn by anaesthetist when pressures drop with building up of end-tidal CO2(etCO2) and other haemodynamic changes occur. We describe the flickering movements of the diaphragm associated with the pleural breach, a useful sign to alert the surgeon and anaesthetist to detect pneumothorax earlier than it is clinically evident.