title: [Is radiotherapy necessary in the control of colorectal cancer?].
abstract: Between 1966 and 1983 we selected 209 patients with colorectal adenocarcinomas, stage B (14%) and C (86%) of Dukes, treated with convenient surgery in 100% of cases, 5-fluorouracil in 85% and postoperative radiotherapy with telecobalt in 46.41% of cases, doses of 5000 to 5500 cGy in 25 to 30 fractions. The results at five years postsurgery were: colon patients who received radiotherapy obtained a survival rate of 34 months versus 17 months for those who did not receive radiotherapy; rectum patients who received radiotherapy survival rate of 20 months versus 26 months for those who did not received. Local recurrences in patients who received radiotherapy were 9.30% for carcinomas of the colon and 11.53% for those with cancer of the rectum, and in patients who did not received radiotherapy local recurrences were 22.22% for those with cancer of the colon and 37.83% for those with cancer of the rectum.
authors.affiliation: Departamento de Radioterapia (Sevicio de Oncología), Hospital 20 de Noviembre del Instituto de Seguridad Social al Servicio de los Trabajadores del Estado, México, D.F.
authors.forename: J
authors.initials: J
authors.lastname: Molina Esquivel
authors.forename: G
authors.initials: G
authors.lastname: Vargas Sandoval
authors.forename: E
authors.initials: E
authors.lastname: Rodríguez del Rincón
authors.forename: J
authors.initials: J
authors.lastname: Velázquez López
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D003082:Colectomy; D003110:Colonic Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D015179:Colorectal Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D004307:Dose-Response Relationship, Radiation; D005260:Female; D005472:Fluorouracil / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D009367:Neoplasm Staging; D011182:Postoperative Care; D012004:Rectal Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D015996:Survival Rate
chemical_list: D003037:Cobalt Radioisotopes; D005472:Fluorouracil
vernacular_title: Es necesaria la radioterapia en el control del cáncer colorrectal?