Background: The aim of the present study was to evaluate the incidence of abdominal lymph node involvement of adenocarcinoma of the gastric cardia in relationship with the site and depth of tumor invasion.
Methods: From July 1988 to April 1998, 79 patients with adenocarcinoma of the gastric cardia underwent surgical curative resection and D2 lymphadenectomy at the 1st Department of General Surgery of Verona University. Among these 79 patients, 16 had an adenocarcinoma of the distal esophagus (type I), 26 patients had an adenocarcinoma of the anatomic cardia (type II) and 37 had a subcardial adenocarcinoma (type III). The frequency of lymph node involvement in each of the lymph nodes as classified by the JRSGC were analyzed.
Results: In type I carcinoma positive lymph nodes occurred in 20% of pT1, 33% of pT2 and 100% of pT3. Positive nodes along the lower half of the stomach were never found. In type II carcinoma positive lymph nodes occurred in 57% of pT1, 86% of pT2 and 83% of pT3. Metastasis along the greater curvature in 18% of advanced cancers were found. In type III carcinoma positive lymph nodes occurred in 83% of pT2, 94% of pT3 and in 100% of pT4. Nodes along greater curvature were involved in 21% of advanced cases and also infrapyloric lymph nodes involved in 13% of cases. The type II and III advanced tumors had involved paraortic lymph node in 33% of cases.
Conclusions: These results suggest that for tumors of the cardia an extended lymphadenectomy is necessary to ensure the removal of all metastatic nodes.
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