Laparoscopic Dissection of Lymph Node Station 16-Why and How?

BACKGROUND: Dissection of para-aortic lymph nodes (Station 16) provides an important prognosticator for patients with gastrointestinal, colorectal, and hepatobiliary cancers.1-4 For example, a positive Station 16 lymph node has been shown to lead to 2-year survival of 3% in patients with pancreas adenocarcinoma, akin to stage IV disease.5,6 Thereby, Station 16 involvement can help with the risk/benefit stratification of the decision to move forward with radical surgery.7-9 Furthermore, it has been shown for gallbladder cancer that involvement of Station 16 cannot necessarily be predicted from the dissection of the hepatoduodenal ligament lymph nodes only.10,11 TECHNIQUE: With the patient in the French position, a complete Kocherization and a Cattel-Braasch maneuver is performed, allowing for visualization of LN station 16b. Station 16b is the inferior border of the station 16 compartment. The left renal vein (LRV) serves as an important landmark to identify the superior border of the dissection comprised by Stations 16a2 and 16b1. Station 16a2 dissection may be associated with a traction injury of the left renal vein or damage of right renal or suprarenal arteries and is dissected if there are specific concerns regarding involvement. CONCLUSIONS: While station 16 provides important prognostic information for risk stratification, a strategic and stepwise approach is needed for a safe sampling. This is accomplished by wide mobilization of the duodenum, implementation of thermal fusion to minimize chyle leak, and careful dissection below the left renal vein.

Subsegmental approaches to S7: anatomic laparoscopic transdiaphragmatic and nonanatomic robotic transthoracic.

BACKGROUND: Minimally invasive liver surgery of postero-superior segments (S4a, S7, S8) remains a challenge. The caudal view, an increased distance between trocars and the operative field, and the liver fulcrum limiting the view, contribute to the difficulty [1, 2]. We and other groups have previously reported the use of intercostal trocars to access subdiaphragmatic tumors (transdiaphragmatic approach) [3-5], only few reports on a laparoscopic total transthoracic approach, none (to our knowledge) dynamic manuscripts of a total transthoracic robotic approach, and none (to our knowledge) that use preoperative port site and anatomic modelling exist. Further, we developed a total transthoracic (thoracoscopic) approach to avoid a hostile abdomen, while bringing viewing axis and instruments close to the target [6-10]. In this context, this report details the advantages of a laparoscopic vs. robotic transthoracic approach. According to institutional protocol, reports of individual cases in print or video format do not require institutional review board approval. PATIENT: A 68-year-old male on peritoneal dialysis with left colon adenocarcinoma and a single synchronous liver metastasis in S6-7 close to the root of the right hepatic vein underwent a laparoscopic transdiaphragmatic metastasectomy. Two years later, the patient developed a recurrent 1.5 cm liver metastasis in S7, which lend itself to a robotic transthoracic approach. TECHNIQUE: Following 3-D modelling and virtual port placement planning, the first metastasectomy was performed laparoscopically using a transdiaphragmatic approach. The recurrence was managed transthoracically due to more apical, subdiaphragmatic location. For this operation, a robotic approach was optimal as robotic wrist articulation facilitates manipulation via the limited intercostal space. This was particularly helpful during the diaphragmatic reconstruction. CONCLUSIONS: Total transthoracic liver surgery is certainly an advanced procedure requiring superior MIS liver skills. Recommendations for starting with a total transthoracic approach are not unlike from starting a standard, none-transthoracic liver surgery. Early on in the experience we recommend advanced liver MIS skills, and single, small, subdiaphragmatic tumors away from major vessels. Nonetheless, when these recommendations are followed a total transthoracic approach may be safer and result in less access trauma, than traversing a hostile abdomen to reach the posterior-superior liver. Both laparoscopic and robotic transthoracic approaches can facilitate the resection of subdiaphragmatic tumors, especially in patients with hostile abdomens. While the laparoscopic approach has advantages due to a broader spectrum of available surgical tools (flexible tip camera, parenchymal dissection, and energy devices), the robotic wrist articulation facilitates manipulation via the restricted intercostal space.

Selection criteria for minimally invasive resection of intrahepatic cholangiocarcinoma-a word of caution: a propensity score matched analysis using the national cancer database.

BACKGROUND: While minimally invasive liver resection (MILR) vs. open approach (OLR) has been shown to be safe, the perioperative and oncologic safety for intrahepatic cholangiocarcinoma (ICC) specifically, necessitating often complex hepatectomy and extended lymphadenectomy, remains ill-defined. METHODS: The National Cancer Database was queried for patients with ICC undergoing liver resection from 2010 to 2016. After 1:1 Propensity Score Matching (PSM), Kruskal-Wallis and χ2 tests were applied to compare short-term outcomes. Kaplan-Meier survival analyses and Cox multivariable regression were performed. RESULTS: 988 patients met inclusion criteria: 140 (14.2%) MILR and 848 (85.8%) OLR resulting in 115 patients MILR and OLR after 1:1 PSM with c-index of 0.733. MILR had lower unplanned 30-day readmission [OR 0.075, P = 0.014] and positive margin rates [OR 0.361, P = 0.011] and shorter hospital length of stay (LOS) [OR 0.941, P = 0.026], but worse lymph node yield [1.52 vs 2.07, P = 0.001]. No difference was found for 30/90-day mortality. Moreover, multivariate analysis revealed that MILR was associated with poorer overall survival compared to OLR [HR 2.454, P = 0.001]. Subgroup analysis revealed that survival differences from approach were dependent on major hepatectomy, tumor size > 4 cm, or negative margins. CONCLUSION: MILR vs. OLR is associated with worse lymphadenectomy and survival in patients with ICC greater than 4 cm requiring major hepatectomy. Hence, MILR major hepatectomy for ICC should only be approached selectively and if surgeons are able to perform an appropriate lymphadenectomy.

Is minimally invasive surgery for large gastric GIST actually safe? A comparative analysis of short- and long-term outcomes.

INTRODUCTION: While minimally invasive surgery (MIS) is frequently utilized to remove small gastric gastrointestinal stromal tumors (GIST), MIS surgery for tumors ≥ 5 cm is currently not endorsed by national guidelines as standard of care due to concerns of safety and inferior oncologic outcomes. Hence this study investigates the perioperative and long-term outcomes of MIS for T3 gastric GIST measuring 5-10 cm. METHODS: The National Cancer Database (NCDB) 2017 was queried for gastric GIST measuring 5-10 cm or T3 category. Inclusion criteria were known: stage, size, comorbidities, grade, lymphovascular invasion, type of surgery, approach, conversion info, margin status, mitotic rate, neoadjuvant and adjuvant treatment, hospital stay, readmission, 30- and 90-day mortality, complete follow-up, type of institution, and hospital gastric surgery case volume. Binary logistic regression, linear regression models, and Kaplan-Meier survival analysis were used. RESULTS: In 3765 patients, mean tumor size was 67.3 mm; 26.3% MIS; and 73.8% open. Median hospital stay was shorter for MIS (4.77 vs 7.04 days, p < 0.001). There was no significant difference in incidence of R1 margins [2.9% MIS vs. 3.1% open (p = 0.143)], unplanned readmission [2.9% MIS and 4.1% open (OR 0.474 p = 0.025)], 30-day mortality [0.5% MIS vs 1.2% open (OR 0.325, p = 0.031)], and 90-day mortality [0.9% MIS vs 2.1% open (OR 0.478 p = 0.036)]. Cox regression models for OS showed no difference in survival (p = 0.137, HR 0.808). CONCLUSION: This analysis provides substantial evidence that MIS for gastric GIST ≥ 5-10 cm may not only offer improved postoperative morbidity but also oncologic safety. Moreover, as both approaches lead to similar long-term survival, national guidelines may need to incorporate this new information.

Poorly differentiated hepatocellular carcinoma: resection is equivalent to transplantation in patients with low liver fibrosis.

BACKGROUND: Organ allocation criteria for liver transplantation focus on tumor size and multifocality while tumor differentiation and existing liver damage are omitted. This study analyzes the impact of hepatocellular carcinoma (HCC) grade and liver fibrosis comparing resection (SX) to transplantation (LT). METHODS: The National Cancer Database was queried between 2004 and 2016 for solitary HCC meeting Milan criteria undergoing SX vs LT. Two groups were created: low fibrosis (LF) vs high fibrosis (HF) and stratified by grade. Cox multivariable regression models, Kaplan-Meier survival analyses and log-rank tests were performed. RESULTS: 1515 patients were identified; 780 had LT and 735 had SX. Median overall survival (mOS) was 39.7 months; LT mOS was 47.9 months vs SX mOS of 34.9 months (P < .001). Multivariate analysis revealed SX, no chemotherapy, longer hospital stays, and age to be associated with worse survival. However, while transplantation conferred survival benefit for well-moderately differentiated tumors, SX vs LT did not impact survival for poorly differentiated HCC in LF patients, independent of tumor size. DISCUSSION: HCC differentiation and liver fibrosis, but not size, synergistically determine efficacy of SX vs LT. Therefore, current HCC transplantation criteria should incorporate tumor grade or liver fibrosis for optimal organ allocation.

Strategic response to bleeding in laparoscopic hepato-pancreato-biliary surgery: an intraoperative checklist.

BACKGROUND: The aim is to develop and test the utility of an event-initiated, team-based check list to optimize the response to bleeding during laparoscopic HPB surgery. METHODS: To build a checklist for managing bleeding events, we conducted a systematic review. Using nominal group technique (NGT), a checklist consisting of four domains was developed. Following team-based training of anesthesia and surgical staff, the checklist was implemented. HPB cases before and after implementation of the checklist were compared for adverse outcomes, bleeding complications, and transfusions. RESULTS: NGT identified four domains: Communicate Control, Expose, and Repair under which the checklist was organized. Supplemental Video for a detailed review of how each domain was applied to a specific case example. We compared 169 HPB cases before to 53 cases after implementation. We found a significant decrease in mean EBL (from 518 ± 852.8 to 151.5 ± 221.7 ml (P = 0.001)) for cases performed after implementation of the checklist and a trends toward less volume of pRBC transfused (2.7 ± 2.5 vs 2.3 ± 1.7 units/per patient, P = 0.611) and transfusion rates (22% vs 11%, P = 0.703). CONCLUSION: An event-initiated, team-based response to an adverse bleeding event during laparoscopic HPB surgery correlates with positive effects on bleeding management, and transfusion rates.

Failure to Cure Patients with Colorectal Liver Metastases: The Impact of the Liver Surgeon.

BACKGROUND: Lack of a liver surgeon (LS) may lead to failure to cure in patients with possibly resectable colorectal liver metastases (CRLM). This study aims to quantify the failure-to-cure rate due to noninclusion of an LS. PATIENTS AND METHODS: All patients who underwent chemotherapy with palliative intent for CRLM at a community oncology network between 2010 and 2018 were identified from a prospectively maintained cancer registry. Two LS blinded to patient management and outcome reviewed pretreatment imaging and assigned each scan a newly developed resectability score. Nominal group technique and independent scores were combined to determine probability of curative-intent resection. Interobserver agreement was calculated using κ testing. RESULTS: This study included 72 palliative CRLM patients. Demographic factors were: 44 (59%) male, median age 68 years (range 36-94 years), 23 (32%) rectal primary, 24 (33%) receiving oxaliplatin-based chemotherapy. Of the 72 patients with CRLM, 6 had left-sided metastases only. The median number of CRLM was 6 (1-8). Agreement on resectability was achieved in 32 (44%) patients for the entire cohort and 17 (54%) in patients without extrahepatic disease. A lower median number of CRLM was found in the group considered to be resectable by the two LS (2 versus 8; p = 0.001). Substantial agreement was found between liver surgeons in the group of patients without extrahepatic disease (κ = 0.9043). CONCLUSIONS: Over 44% of patients who were assigned palliative chemotherapy at tumor boards without an LS were considered potentially resectable upon independent LS review.

Does a Laparoscopic Approach to Distal Pancreatectomy for Cancer Contribute to Optimal Adjuvant Chemotherapy Utilization?

BACKGROUND: Although laparoscopic distal pancreatectomy (LDP) versus open approaches (ODP) for pancreatic adenocarcinoma (PDAC) is associated with reduced morbidity, its impact on optimal adjuvant chemotherapy (AC) utilization remains unclear. Furthermore, it is uncertain whether oncologic resection quality markers are equivalent between approaches. METHODS: The National Cancer Database (NCDB) was queried between 2010 and 2016 for PDAC patients undergoing DP. Effect of LDP vs ODP and institutional case volumes on margin status, hospital stay, 30-day and 90-day mortality, administration of and delay to AC, and 30-day unplanned readmission were analyzed using binary and linear logistic regression. Cox multivariable regression was used to correct for confounders. RESULTS: The search yielded 3411 patients; 996 (29.2%) had LDP and 2415 (70.8%) had ODP. ODP had higher odds of readmission [odds ratio (OR) 1.681, p = 0.01] and longer hospital stay [ß 1.745, p = 0.004]. No difference was found for 30-day mortality [OR 1.689, p = 0.303], 90-day mortality [OR 1.936, p = 0.207], and overall survival [HR 1.231, p = 0.057]. The highest-volume centers had improved odds of AC [OR 1.275, p = 0.027] regardless of approach. LDP conferred lower margin positivity [OR 0.581, p = 0.005], increased AC use [3rd quartile: OR 1.844, p = 0.026; 4th quartile; OR 2.144, p = 0.045], and fewer AC delays [4th quartile: OR 0.786, p = 0.045] in higher-volume centers. CONCLUSIONS: In selected patients, LDP offers an oncologically safe alternative to ODP for PDAC independent of institutional volume. However, additional oncologic benefit due to optimal AC utilization and lower positive margin rates in higher volume centers suggests that LDP by experienced teams can achieve best possible cancer outcomes.

Laparoscopic Pancreatic Head Preserving Total Duodenectomy: The Parenchymal Sparing Alternative to a Whipple.

BACKGROUND: When endoscopic options fail, laparoscopic pancreatic head-preserving duodenectomy (LPHPD) for benign duodenal lesions is a parenchymal sparing and safe alternative to a pancreaticoduodenectomy.1-3 LPHPD may be the optimal "amount" of surgery, because such lesions are at risk for undertreatment (partial endoscopic resection associated with recurrence) or overtreatment (Whipple associated with morbidity and loss of pancreatic parenchyma).4,5 PATIENT: A 80-year-old, healthy female patient was diagnosed endoscopically with two, flat, symptomatic adenomas (7-cm D2; 2-cm D3). She had no family history of polyposis. Germline testing, tumor markers, and colonoscopy did not show any abnormality. TECHNIQUE: With the patient in French position, a wide laparoscopic Kocherization was performed past IVC and aorta. Following prepyloric gastric transection, the entire duodenum was carefully dissected off the pancreas. After transection of the proximal jejunum, the reconstruction begins. A two-layer, duct-to-mucosa, ampullary-jejunal anastomosis and a type II Billroth gastrojejunostomy were performed. CONCLUSIONS: LPHPD avoids under- or overtreatment of benign duodenal lesions unamenable to an endoscopic approach. If the stepwise approach described in this video is followed, LPHPD represents a safe and parenchymal-sparing alternative to pancreaticoduodenectomy for benign duodenal lesions with reduced morbidity.

Western population-based study of oncologic surgical quality and outcomes of laparoscopic versus open gastrectomy for gastric adenocarcinoma.

BACKGROUND: While studies have reported improved morbidity of laparoscopic (LG) compared with open gastrectomy (OG), it remains unclear whether comparable oncologic outcomes can be achieved. This study aims at comparing not only short-term outcomes, including 30- and 90-day mortality, but also survival of LG vs OG. METHODS: The National Cancer Database was searched for adult patients with histologically proven gastric cancer and complete information regarding M0 disease, tumor size, differentiation grade, T stage, nodal status, comorbidities, type of hospital, hospital stay, type of surgery, oncological treatment and survival data were included. Logistic regression analyses were performed to analyze margin status, 30- and 90-day mortality, and 30-day re-admission rate. Linear regression was performed for length of hospital stay and lymph node yield. Kaplan-Meier survival analyses were performed to evaluate median survival. Cox multivariable regression models were created to correct for confounders and identify factors affecting survival. RESULTS: A query of the National Cancer Database identified 13,538 patients with complete dataset. A significant regression equation favoring LG for lymph node yield, hospital stay, and unplanned re-admission rate was identified. There was no significant effect of surgical approach on R1 margin rate, 30-day mortality, or 90-day mortality. Median survival was comparable between LG and OG (44.8 vs 40.2 months, p = 0.804). CONCLUSION: LG offers a safe surgical approach to gastric cancer with shorter hospital stay and lower re-admission rates than OG, and also similar and sometimes improved operative oncologic quality parameters (margin, lymph node yield). More importantly, this Western series demonstrates that equivalent long-term outcomes of LG vs. OG are being achieved.

Laparoscopic pancreatectomy for cancer in high volume centers is associated with an increased use and fewer delays of adjuvant chemotherapy.

BACKGROUND: This study aimed to investigate the relationship between hospital case volume, surgical approach and AC-use in patients who underwent pancreatectomy for pancreatic ductal adenocarcinoma (PDAC). METHODS: Patients were divided into quartiles by institutional pancreatectomy case volume, resection type (pancreaticoduodenectomy [PD], distal pancreatectomy [DP], or total pancreatectomy [TP]) and surgical approach (laparoscopic vs. open). The rates and contributing factors of AC administration and delay >90 days were compared among volume quartiles and surgical approaches. RESULTS: This study identified 23,494 patients who had undergone pancreatectomy for PDAC between 2010 and 2016 and met inclusion criteria. After correcting for confounders, compared to low volume hospitals patients at high-case-volume hospitals had the highest rates of AC administration after PD and DP. Moreover, compared to open surgery for all resection types, laparoscopic surgery was associated with a higher rate of AC use at high and highest-case-volume hospitals and less delay to chemotherapy at high-volume hospitals. For DP, laparoscopic approach had a positive impact on AC delay >90-day at the highest volume institutions only. CONCLUSIONS: Laparoscopic surgery for pancreatic cancer leads to higher utilization and lower probability of delay of AC in high and highest volume hospitals.

Laparoscopic Segment 1 with Partial IVC Resection in Advanced Cirrhosis: How to Do It Safely.

BACKGROUND: Laparoscopic versus open hepatocellular carcinoma (HCC) resection reduces morbidity without a compromise in oncologic safety.1-4 Moreover, in the subgroup of cirrhotic patients, a decreased risk of prolonged postoperative ascites and liver decompensation has been reported.5-7 METHODS: A 54-year-old homeless, deaf male with chronic alcoholism, hepatitis C, and advanced cirrhosis was referred with a caudate tumor from a critical access hospital. Imaging showed a 3.6-cm HCC in the caudate lobe compressing the inferior vena cava (IVC). With the patient in reversed, modified French position, the liver was mobilized, and the hepatocaval space dissected. Portal and short hepatic vein branches were individually controlled, and the caudate lobe was dissected off the IVC. At the superior portion of the Spiegel process, the tumor was inseparable from the IVC, necessitating en bloc segment 1 with partial IVC resection. The IVC was reconstructed laparoscopically following a preplanned approach. The pathology report confirmed R0 resection of a moderately differentiated hepatocellular carcinoma without microvascular or perineural invasion (pT1bN0M0). CONCLUSION: Laparoscopic caudate lobectomy for cirrhotic patients with partial IVC resection is technically demanding. It therefore requires a strategic and preplanned approach with dedicated instrumentation and laparoscopic skills available. Although the caudal view along the axis of the IVC facilitates dissection, a laparoscopic approach necessitates particular attention to central venous pressure management (intravenous fluid and respiratory tidal volume), meticulous control of portal and short hepatic vein branches, and availability of specialty laparoscopic instrumentation to ensure procedural safety.

The impact of the COVID-19 pandemic on patients with pancreatic cancer.

BACKGROUND: It remains unclear today whether the poor prognosis of pancreatic ductal adenocarcinoma (PDAC) was further worsened by the COVID-19 pandemic and whether this may affect providers and patients, today. Hence, this study aimed to investigate the effect of COVID-19 on care delivery and outcomes of patients with PDAC in the United States. METHODS: The National Cancer Database was queried for PDAC, between 2017 and 2020. Changes in the number of diagnoses and treatment patterns were compared annually for the entire cohort. Changes in surgical outcomes and median time from diagnosis to treatment were compared and analyzed. Chi-square, Mann-Whitney U, and Kruskal-Wallis tests were performed. RESULTS: Of 127,613 patients with PDAC, PDAC diagnoses from 2017 (30,573) to 2019 (33,465) increased but decreased in 2020 (31,218). The number of patients receiving surgery or radiotherapy was stable between 2017 to 2019 (21.75% ± 0.05% and 13.9% ± 0.3%, respectively) but decreased in 2020 (20.7% and 12.4% respectively). Although patients received chemotherapy with increasing frequently from 2016 (60.7%) to 2019 (63.5%), this trend stopped in 2020 (63%). Of 27,490 patients undergoing surgery, the mean time from diagnosis to surgery increased from 2017 (34 days) to 2019 (56 days), with an increase in delay in 2020 (81 days). Moreover, patients who were tested for COVID-19, had a longer median time from diagnosis to surgery even if tested negative (COVID+, 140 days; COVID-, 112 days; P < .001). CONCLUSION: Although the oncologic quality of PDAC surgery remained the same during the pandemic, not only did the pandemic lead to an underdiagnosis of PDAC and care delays, but even the suspicion of COVID-19 in patients with a negative test adversely affected their care.

Beneficial Mitochondrial Biogenesis in Gastrocnemius Muscle Promoted by High-Intensity Interval Training in Elderly Female Rats.

OBJECTIVE: Exercise can attenuate mitochondrial dysfunction caused by aging. Our study aimed to compare 12 weeks of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on the expression of mitochondria proteins [e.g., AMP-activated protein kinase (AMPK), Estrogen-related receptor alpha (ERRα), p38 mitogen-activated protein kinase (P38MAPK), and Peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1-α)] in gastrocnemius muscle of old female rats. MATERIALS AND METHODS: In this experimental study, thirty six old female Wistar rats (18-month-old and 270-310 g) were divided into three groups: i. HIIT, ii. MICT, and iii. Control group (C). The HIIT protocol was performed for 12 weeks with 16-28 minutes (2 minutes training with 85-90% VO2max in high intensity and 2 minutes training with 45-75% VO2max low intensity). The MICT was performed for 30-60 minutes with the intensity of 65-70% VO2max. The gastrocnemius muscle expression of AMPK, ERRα, P38MAPK, and PGC1α proteins were determined by Western blotting. RESULTS: The expression of AMPK (P=0.004), P38MAPK (P=0.003), PGC-1α (P=0.028), and ERRα (P=0.006) in HIIT was higher than C group. AMPK (P=0.03), P38MAPK (P=0.032), PGC-1α (P=0.015), and ERRα (P=0.028) in MICT was higher than the C group. Also expression of AMPK (P=0.008), P38MAPK (P=0.009), PGC-1α (P=0.020) and ERRα (P=0.014) in MICT was higher than MICT group. CONCLUSION: It seems that exercise training has beneficial effects on mitochondrial biogenesis, but the HIIT training method is more effective than MICT in improving mitochondrial function in aging.

Central Pericystectomy for Hydatid Cyst Treatment.

BACKGROUND: Compared to open resection for hepatic hydatid cysts, a laparoscopic approach may combine the benefit of reduced morbidity with complete cyst removal. Nonetheless, intraoperative cyst rupture during a laparoscopic approach due to reduced tactile feedback is a valid concern.1-3 Today, the laparoscopic experience remains limited even in high incidence regions.4 Here, a structured approach to laparoscopic pericystectomy is demonstrated. PATIENT: A 37-year-old male from Uruguay presents with worsening abdominal pain, nausea, and vomiting. A 4-phase liver CT shows a large complex liver cyst (8.8 × 8.2 × 11.3 cm), encompassing the left hepatic lobe while abutting right hepatic vein (RHV), anterior fissure vein (AFV) and inferior vena cava (IVC). Further, the cyst causes mass effect on the hepatic vein vasculature. CT appearance is consistent with a large hydatid cyst with distorted hepatic anatomy resulting in compensatory hypertrophy of segments II, VI and VII. Appropriate institutional review board (IRB) and inform consent was obtained. TECHNIQUE: Following neoadjuvant albendazole for 4 weeks to minimize any effects in case of inadvertent cyst spillage, the patient tested negative for echinococcal antibody. For surgical planning, the patient's anatomy was modeled to optimize the understanding of the complex spatial relationship between cyst, portal pedicle and hepatic veins. Further, port sites were preoperatively modelled to optimize port placement in the context of the altered anatomy from compensatory hepatic hypertrophy. During surgery, with the patient in a modified French position, the liver was completely mobilized. Then, a parenchymal transection plane was developed guided by RHV, AFV and IVC, while biliary radicals entering directly into the cyst were controlled individually. The complex transection plane resulted in preservation of the unaffected liver segments I, II, VI and VII. CONCLUSION: The multimodal approach demonstrated here included pretreatment with albendazole followed by safe laparoscopic pericystectomy. In the preoperative setting, albendazole can reduce the risk of recurrence if spillage occurs during surgery. In inoperable patients, it has been previously shown to be an effective monotherapy for small (< 5 cm) CE1 and CE3a cysts.5 For preoperative planning, an automated image reconstruction software (Fujifilm Synapse 3D) is used. The software creates a 3D model of the liver segmentation and vessels from contrast-enhanced CT and MR images. In addition to modelling the liver, port placement in relation to the liver is being simulated prior to surgery to optimize port placement at the time of surgery. During the case, the parenchymal transection is guided by RHV, AFV and IVC. The common postoperative complication of persistent biliary leakage was avoided by controlling each biliary radicals entering the cyst from the liver parenchyma. Biliary leaks are a common complication and have been positively correlated with the cyst diameter (~ 79% of cysts with diameter of 7.5 cm or greater have cysto-biliary fistula).6 In this context, indocyanine green may help to identify relevant biliary radicals entering the cyst or aid in recognizing bile leaks. If the stepwise approach described here is followed, minimally invasive pericystectomy represents a safe alternative to open surgery, harnessing the advantages of minimal risk of recurrence due to complete cyst removal and low morbidity.

Colorectal cancer in young patients below screening age - Demographic and socioeconomic factors associated with incidence and survival.

BACKGROUND: While early onset colorectal cancer (EOCRC) has previously been defined as CRC in patients younger than age 50, recent screening guidelines have been lowered to 45. With more younger patients aged 45-50 are now being screened, incidence trend and outcomes of very early EOCRC (20-44) remains unclear. METHOD: Surveillance, Epidemiology, and End Results database was analyzed between 2006 and 2016 using Joinpoint tool to evaluate annual percentage change (APC) in incident rates, focusing on race/ethnicity and socioeconomic status (SES). Cancer specific survival (CSS) was assessed using univariate and multivariate analysis. RESULTS: 41,815 EOCRC patients met inclusion criteria. Incidence has increased significantly in both age groups (APC in age group 20-44 = 1.21 and 45-49 = 1.06). Increase incidence of very early EOCRC was observed in White and Hispanic racial/ethnic groups (ACP 1.68 and 2.63), as well as population from counties with high poverty, unemployment, language barrier, foreign born resident, and high school dropout rates (ACP 2.07, 1.87, 1.21, 1.28 and 2.02 respectively). Further, the 5-year CSS was worse in Black patients, and patients from counties with high poverty, unemployment and high school dropouts rates (Age group 20-44, 63.11%, 66.39%, 67.48% and 66.95% respectively). On multivariate analysis, living in high poverty counties was an independent risk factor for poorer CSS for very early EOCRC (HR 1.20, 95% CI 1.07-1.34, p = 0.002). Multivariate analysis was adjusted by sex, pathology type, site of disease, disease extension and surgical treatment history. CONCLUSION: Very early EOCRC incidence increases in White, Hispanic and poor patients, and outcomes are worse for minority and low-income patients. Further study on very early EOCRC is needed among those patients.