Surgical approach to adenocarcinoma of the gastric cardia

A novel technique for gaining extra length of the abdominal esophagus

During gastrectomies for carcinomas of the esophagogastric junction, it is often desirable to gain additional length of the abdominal esophagus to construct an intra-abdominal esophagojejunal anastomosis. In this report, we describe a technique of esophageal mobilization that combines transhiatal dissection with transection of both vagus nerves at 3 points: first, at a level 2 cm to 3 cm below tracheal bifurcation; second, 3 cm to 5 cm above the hiatus; and, finally, at the level of the hiatus. Using this technique in 11 patients with carcinoma of the esophagogastric junction, we achieved lengthening of the abdominal esophagus by 3.7 cm +/- 1.2 cm (mean +/- standard deviation). In all cases, the additional esophageal length permitted the completion of an oncologically adequate resection and the execution of a safe intra-abdominal esophagojejunal anastomosis.

Biologic and clinical variations of adenocarcinoma at the esophago-gastric junction: relevance of a topographic-anatomic subclassification

A topographic-anatomic subclassification of adenocarcinomas of the esophago-gastric junction (AEG) in distal esophageal adenocarcinoma (AEG Type I), true carcinoma of the cardia (AEG Type II), and subcardial gastric cancer (AEG Type III) was introduced in 1987 and is now increasingly accepted and used worldwide. Our experience with now more than 1,300 resected AEG tumors indicates that the subtypes differ markedly in terms of surgical epidemiology, histogenesis and histomorphologic tumor characteristics. While underlying specialized intestinal metaplasia can be found in basically all patients with AEG Type I tumors, this is uncommon in Type II tumors and virtually absent in Type III tumors. Stage distribution and overall long-term survival after surgical resection also shows marked differences between the AEG subtypes. Surgical treatment strategies based on tumor type allow a differentiated approach and result in survival rates superior to those reported with other approaches. The subclassification of AEG tumors thus provides a useful tool for the selection of the surgical procedure and allows a better comparison of treatment results.

Sentinel node detection in Barrett's and cardia cancer

Because of surveillance strategies in patients with known Barrett's esophagus, more patients with high-grade dysplasia or early cancer in the distal esophagus and at the esophagogastric junction are identified. The need for and extent of lymphadenectomy in such patients are controversial. The technique of sentinel lymph node dissection (SLND) to diagnose early lymphatic spread is applied increasingly in tumors of the gastrointestinal tract. The poorly defined lymphatic drainage of the esophagogastric junction has so far prevented many investigators from performing SLND in tumors of this anatomic region. We report the first results of SLND in Barrett's and cardia cancer. The preliminary experience indicates that the method is, even in this anatomical area, feasible and yields good results in early tumors. In advanced tumors, the method lacks sensitivity. Mapping should be done with blue dye and a radiocolloid. The concept of sentinel lymph node mapping and detection thus may open the door to individualized therapy for patients with high-grade dysplasia in a Barrett's esophagus or with early Barrett's and cardia cancer.