Early gastric cancer and Helicobacter pylori: 34 years of experience at Charity Hospital in New Orleans.
Good survival rates have been reported for resected early gastric adenocarcinoma (EGC) in patients found via screening procedures. However, the prevalence of Helicobacter pylori in EGC in unscreened populations is unclear. The major purpose of this investigation was to analyze the clinical experience and incidence of H. pylori in unscreened patients presenting with EGC at Charity Hospital over a 34-year period. From 1963 through 1997, the tumor registry at Charity Hospital compiled data on 2497 patients evaluated for gastric carcinoma. Of these patients, 26 (1%) had lesions that were confined to the mucosa or submucosa, i.e., T1N0M0 (American Joint Commission on Cancer classification). Pathology specimens and medical records were retrieved for confirmation of diagnosis and retrospective analysis for H. pylori. H. pylori was analyzed by Steiner staining and immunohistochemistry using a polyclonal antibody. EGC was detected in 12 men and 14 women with a mean age of 62 years. Upper gastrointestinal X-ray studies were performed on 19 of the 26 patients and failed to conclusively demonstrate a lesion in any case. Endoscopy was performed on 22 patients, and preoperative biopsies were positive in 95 per cent of these. Operative procedures included 2 local excisions and 22 subtotal and 2 total gastrectomies. No extended nodal dissections were performed. Microscopic evaluation revealed lesions limited to the mucosa in 63 per cent of cases and involving the submucosa in 37 per cent of the cases. Of the 14 patients evaluable of H. pylori, 79 per cent were positive for the bacterium. The status of 2 patients is unknown, and only 1 patient died of the original gastric cancer, for a disease-free survival of 96 per cent. The 5-year and 10-year overall survival rates were calculated to be 50 per cent and 21 per cent, respectively, when all causes of death were taken into consideration. Median follow-up of the survivors was 64 months. Resection of early gastric carcinoma in unscreened patients without extended lymphadenectomy yielded excellent results. H. pylori was present in 79 per cent of cases. These data suggest an association between H. pylori and EGC. Whether H. pylori infection is an etiologic factor in gastric cancer remains an area of active research.
Eckert
M W
MW
Department of Surgery, Louisiana State University, New Orleans, USA.
McKnight
C A
CA
Lee
J A
JA
Araya
J
J
Correa
P
P
Cohn
I
I
Levine
E A
EA
D000206:Actuarial Analysis; D000230:Adenocarcinoma / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D002423:Cause of Death; D005260:Female; D005743:Gastrectomy; D016481:Helicobacter Infections / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D016480:Helicobacter pylori; D006801:Humans; D008145:Louisiana / Q000453:epidemiology; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009367:Neoplasm Staging; D011183:Postoperative Complications / Q000401:mortality; D011230:Precancerous Conditions / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D015996:Survival Rate