title: Multivisceral resection for colon cancer.
abstract: BACKGROUND
  There is a lack of appropriate information in regard to the optimal treatment for colon cancer infiltrating neighboring organs.
  
  
  OBJECTIVE
  The objective of this study is to analyze treatment results and to identify the risk factors of death by cancer in these patients.
  
  
  METHODS
  A retrospective analysis of 40 patients with colon cancer infiltrating neighboring organs without distant metastases was carried out. Patterns of recurrence and 5-year survival were analyzed.
  
  
  RESULTS
  The study included 20 males and 20 females with a median age of 51.5 years. Primary tumor location was as follows: right colon (n = 15); transverse colon (n = 5); left colon (n = 7), and sigmoid (n = 13). In 17 patients, the colon tumor infiltrated the abdominal wall alone or together with neighboring organs and in 23 patients, one or more neighboring organs were infiltrated. Eleven patients (27.5%) developed postoperative complications. Two patients (5%) died during the postoperative period. Microscopic tumor infiltration was demonstrated in 29 patients (72.5%). Tumor stage was as follows: T3,N0 (n = 8); T3,N+ (n = 3); T4,N0 (n = 16), and T4,N+ (n = 13). Overall 5-year survival was 45%. Multivariate analysis shows that the unfavorable risk factors for 5-year survival were neoplastic cell infiltration to neighboring organs, age > 50 years, and lymph node metastases.
  
  
  CONCLUSIONS
  The main risk factors for cancer-related failure are neoplastic infiltration to neighboring organs, age > 50 years, and lymph node metastases. In T4 colon cancer, the recurrence pattern was found at local, peritoneal, and distant sites.
authors.affiliation: Colorectal Service, Surgical Oncology Department, Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México, D.F., México.
authors.forename: Pedro
authors.initials: P
authors.lastname: Luna-Pérez
authors.forename: Saúl E
authors.initials: SE
authors.lastname: Rodríguez-Ramírez
authors.forename: Marcos Gutiérrez
authors.initials: MG
authors.lastname: De la Barrera
authors.forename: Moisés
authors.initials: M
authors.lastname: Zeferino
authors.forename: Sonia
authors.initials: S
authors.lastname: Labastida
mesh_terms: D000005:Abdomen / Q000601:surgery*; D003082:Colectomy; D003110:Colonic Neoplasms / Q000473:pathology / Q000601:surgery* / Q000628:therapy; D003131:Combined Modality Therapy; D013505:Digestive System Surgical Procedures / Q000379:methods*; D005260:Female; D006801:Humans; D007421:Intestine, Small / Q000601:surgery*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D012189:Retrospective Studies; D012307:Risk Factors; D015996:Survival Rate