Surgeon-Pathologist Team Approach Dramatically Affects Lymph Nodes Detection and Improves Patients' Short-Term Outcome

Simple Summary

Appropriate lymph node harvesting for patients with gastric cancer is fundamental for a correct staging and is strongly related to survival. In this study, we present a new protocol for on-site macroscopic evaluation and sampling of lymph nodes for gastric cancer patients. With the joint collaboration of surgeons and pathologists, our method aims to provide the largest possible number of analyzed lymph nodes per patient, allowing for a better staging. We are convinced that this approach is routinely feasible, and our preliminary results seem to confirm better patient stratification compared to other lymph node dissection methods.

Abstract

The downstaging of gastric cancer has recently gained particular attention in the field of gastric cancer surgery. The phenomenon is mainly due to an inappropriate sampling of lymph nodes during standard lymphadenectomy. Hence, collection of the maximum number of lymph nodes is a critical factor affecting the outcome of patients. None of the techniques proposed so far have demonstrated a real efficiency in increasing the number of identified lymph nodes. To harvest the maximum number of lymph nodes, we designed a protocol for on-site macroscopic evaluation and sampling of lymph nodes according to the Japanese Gastric Cancer Association protocol. The procedure was carried out by a surgeon/pathologist team in the operating room. We enrolled one hundred patients, 50 of whom belonged to the study group and 50 to a control group. The study group included patients who underwent lymph node dissection following the proposed protocol; the control group encompassed patients undergoing standard procedures for sampling. We compared the number and maximum diameter of lymph nodes collected in both groups, as well as some postoperative variables, the 30-day mortality and the overall survival. In the study group, the mean number of lymph nodes harvested was higher than the control one (p = 0.001). Moreover, by applying the proposed technique, we sampled lymph nodes with a very small diameter, some of which were metastatic. Noticeably, no difference in terms of postoperative course was identified between the two groups, again supporting the feasibility of an extended lymphadenectomy. By comparing the prognosis of patients, a better overall survival (p = 0.03) was detected in the study group; however, to date, no long-term follow-up is available. Interestingly, patients with metastasis in node stations number 8, 9, 11 or with skip metastasis, experienced a worse outcome and died. Based on our preliminary results, the pathologist/surgeon team approach seems to be a reliable option, despite of a slight increase in sfaff workload and technical cost. It allows for the harvesting of a larger number of lymph nodes and improves the outcome of the patients thanks to more precise staging and therapy. Nevertheless, since a higher number of patients are necessary to confirm our findings and assess the impact of this technique on oncological outcome, our study could serve as a proof-of-concept for a larger, multicentric collaboration.

[Simultaneous laparoscopic treatment for common bile duct stones associated with acute cholecystitis. Results of a prospective study]

Laparoscopy for the management of acute cholecystitis has gained wide acceptance. Although it is well known that acute cholecystitis may be complicated by common bile duct stones in up to 15% of cases, to date there are no published studies addressing the management of common bile duct stones detected during laparoscopy for acute cholecystitis. We postulated that, when found, common bile duct stones associated with acute cholecystitis could be effectively and safety managed during the same laparoscopic procedure. We report on a five-year prospective study (2001-2005) involving 313 unselected patients who presented with a clinical diagnosis of acute cholecystitis (confirmed by specimen examination) and without any contraindication to laparoscopy. At surgery, transcystic cholangiograms were obtained in 289 (92%); the other 24 were excluded from the study. With an established diagnosis of common bile duct stones, attempts were made to clear the common bile duct by transcystic basket retrieval, ERCP or choledochotomy. Prevalence of common bile duct stones in acute cholecystitis, success of laparoscopic common duct clearance, conversion rate, operative time, morbidity, and postoperative hospital stay were the main outcome measures. Common bile duct stones were found in 63 pts (21.7%) presenting with acute cholecystitis. At laparoscopy, 12 patients (19%) required conversion to open surgery, 3 of these being due to failure to achieve common bile duct clearance. Common bile duct stones were cleared entirely laparoscopically in 51 patients (81%) by means of transcystic stone retrieval (38 pts, 75%), ERCP (12 pts, 23%) or choledocotomy (1 pt, 2%). At intention to treat analysis, patients undergoing cholecystectomy plus common bile duct clearance compared to those undergoing cholecystectomy alone, spent significantly more time in the operating theatre (mean 192 min vs 118 min, p < 0.001), needed open conversion more frequently (19% vs 6.1%, p = 0.0045), and had a higher overall morbidity rate (17.4% vs 4.4%, p = 0.015). The simultaneous procedure also adversely affected the postoperative hospital stay (mean 4.8 vs 3.4 days, p = 0.0164). Mortality was nil in both groups. The prevalence of common bile duct stones in patients presenting with acute cholecystitis should not be neglected. When common bile duct stones are found, clearance may be obtained laparoscopically in a substantial number of cases without any need for open surgery. The simultaneous laparoscopic approach for acute cholecystitis and common bile duct stones remains, however, a highly skilled and technically demanding procedure. Although a moderate incidence of drawbacks is observed, the results should be interpreted from the point of view of an all-in-one procedure that allows the patients to be cured without needing any further sequential interventions.

Giant epidermoid cyst of the spleen with carbohydrate and cancer antigen production managed laparoscopically

True cysts of the spleen are rare; in a few cases, high serum levels of carbohydrate and cancer antigen have been reported. In such instances, cyst resection or splenectomy is indicated to rule out malignant lesions and to remove the cancer antigen producing epithelium. We report the case of a young woman with a symptomatic giant epidermoid cyst of the spleen. Due to the secreting epithelium lining the cyst, serum levels of CA 19-9 and CA 125 were elevated. Laparoscopic splenectomy achieved symptoms relief and and long-term normalization of serum tumor markers.

Laparoscopic left hemicolectomy in a patient with cirrhosis scheduled for liver transplantation

Hepatic cirrhosis is a negative prognostic factor for major abdominal surgery, with a greater risk of bleeding, infection, and ascites. The case of a 54-year-man with adenocarcinoma of the sigma affected by hepatitis B virus and hepatitis C virus hepatopathy as well as micro- and macrconodular cirrhosis (Child's B7 stage) waiting for liver transplantation is reported. After a consultation with the liver transplantation our hospital, and considering the the patient's age laparoscopy was determined to be the procedure of choice because it would give him the possibility of a transplantation in the future. A typical left hemicolectomy with left flexure mobilization and mechanic colorectal T-T-anastomosis was therefore performed. All surgical maneuvers in the right hypochondrium were avoided. Mobilization was performed using an ultrasonic scalpel to reduce the risk of bleeding, and the anatomic stump was pulled out by means of a midline minilaparotomy, sparing the anastomotic circles of the abdominal wall. Follow-up evaluation was uneventful. At an 8-month follow-up visit, the patient was in good general condition. In this case, laparoscopic surgery allowed an oncologically suitable colonic resection without complication and poor surgical stress. Moreover, open surgery would have reduced the possibility of a transplantation in the future.

Laparoscopic treatment of pancreatic insulinoma

Laparoscopy and laparoscopic ultrasonography (LUS) have been proposed for the diagnosis and treatment of pancreatic insulinoma. We present for cases of pancreatic insulinoma approached by laparoscopy guided by LUS. In three cases, insulinomas were in the pancreatic body and in one case in the pancreatic head. All lesions were detected preoperatively by abdominal US and confirmed by computed tomography. Laparoscopy was performed under general anesthesia. LUS was performed using a 10-mm flexible probe. In two cases the adenoma was enucleated using scissors and electrocoagulation, major vessels were controlled using clips, and enucleation was completed using a 30-mm endo-GIA. In one case a laparoscopic distal pancreatectomy with spleen preservation was performed. In one case the adenoma was deep in the pancreatic head; minilaparotomy was performed and the adenoma enucleated. Patients were discharged in good health 5-7 days after surgery. The postoperative course was complicated in one case of enucleation by peripancreatic fluid collection that was treated percutaneously. Our experience confirms that accurate localization followed by excision of tumors via the laparoscopic approach constitute a significant advance in the management of insulinoma.