title: [Small bowel tumors: experience at the Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán"].
abstract: BACKGROUND
  Malignant tumors of the small bowel are uncommon and include multiple histologic strains, which helps explain the existing limited understanding of them. The aim of this study was to evaluate surgically treated small bowel tumors and to determine the clinical and pathological characteristics that can have an impact on patient outcome.
  
  
  METHODS
  A retrospective, observational, and descriptive study was carried out. The case records of patients with small bowel tumor that were surgically treated at the Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán" from 1990 to August 2011 were analyzed using the SPSS version 17.0 statistical package.
  
  
  RESULTS
  Thirty-eight small bowel tumor patients were found that had been operated on within the time frame studied. Fifteen of them were women (39.50%) and 23 were men (60.50%), and the mean age was 55.6 years. The histologic distribution was 13 adenocarcinomas (34.20%), 10 neuroendocrine tumors (26.30%), 8 sarcomas (21.10%) and 4 lymphomas (10.50%). There was an increase in the incidence of sarcomas and adenocarcinomas, whereas lymphomas and neuroendocrine tumors were evenly distributed.
  
  
  CONCLUSIONS
  An increase in small bowel tumor incidence in the last few years was observed and adenocarcinoma was the most frequent tumor in the study population. It is important to have a high degree of suspicion for this disease when patients present with symptoms such as gastrointestinal bleeding, bowel obstruction, anemia, and weight loss, because early diagnosis is essential for guaranteeing favorable outcome.
authors.affiliation: Dirección de Cirugía, Sección de Cirugía Oncológica, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", México D.F., México.
authors.forename: A
authors.initials: A
authors.lastname: Sánchez-Ramón
authors.forename: V
authors.initials: V
authors.lastname: Cerino-Palomino
authors.forename: H
authors.initials: H
authors.lastname: Medina-Franco
mesh_terms: D000230:Adenocarcinoma / Q000453:epidemiology / Q000473:pathology / Q000628:therapy; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000628:therapy*; D007421:Intestine, Small / Q000473:pathology*; D008223:Lymphoma / Q000453:epidemiology / Q000473:pathology / Q000628:therapy; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D018358:Neuroendocrine Tumors / Q000453:epidemiology / Q000473:pathology / Q000628:therapy; D011379:Prognosis; D012509:Sarcoma / Q000453:epidemiology / Q000473:pathology / Q000628:therapy; D016019:Survival Analysis; D055815:Young Adult