title: Intraperitoneal hyperthermic perfusion with mitomycin C for colorectal cancer with peritoneal metastases.
abstract: BACKGROUND
  Intraperitoneal (i.p.) metastases pose a special problem for surgical treatment because of their multiplicity and microscopic size. This study was designed to examine the feasibility and safety of i.p. hyperthermic perfusion (IPHP) with mitomycin C (MMC) for treating recurrent colorectal cancer.
  
  
  METHODS
  Fifteen patients with metastatic colon cancer were treated. All patients underwent cytoreductive procedures leaving only residual i.p. metastases < 1 cm in diameter. All patients had received prior systemic chemotherapy, but their disease had progressed. Intraperitoneal chemotherapy was administered through three large catheters (28 French) using a closed system of two pumps, a heat exchanger, and two filters. After the patient's abdominal temperature reached 41 degrees C, 45-60 mg of MMC was circulated intraperitoneally for 1 h.
  
  
  RESULTS
  The majority of patients had various anastomoses: small bowel (n = 11), large bowel (n = 5), and urologic (n = 5). No anastomotic complications occurred in any of the patients. One patient experienced severe systemic MMC toxicity, which caused cytopenia and respiratory depression. In all patients the carcinoembryonic antigen (CEA) level decreased after surgery and IPHP. Median follow-up was 10 months, and recurrence was defined as an elevation in CEA level. Disease recurred in three patients within 5 months, and disease recurred in seven other patients over the next 3 months; one patient remains clinically free of disease after 8 months.
  
  
  CONCLUSIONS
  Our data suggest that IPHP is a safe palliative method of treatment for patients with peritoneal carcinomatosis. The median patient response duration of 6 months may warrant consideration of a repeat IPHP procedure at that time.
authors.affiliation: Department of Surgery, Ohio State University Hospitals, Columbus 43210, USA.
authors.forename: S
authors.initials: S
authors.lastname: Schneebaum
authors.forename: M W
authors.initials: MW
authors.lastname: Arnold
authors.forename: A
authors.initials: A
authors.lastname: Staubus
authors.forename: D C
authors.initials: DC
authors.lastname: Young
authors.forename: D
authors.initials: D
authors.lastname: Dumond
authors.forename: E W
authors.initials: EW
authors.lastname: Martin
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage*; D002272:Carcinoembryonic Antigen / Q000378:metabolism; D017024:Chemotherapy, Adjuvant; D010478:Chemotherapy, Cancer, Regional Perfusion / Q000379:methods*; D015179:Colorectal Neoplasms / Q000473:pathology*; D006801:Humans; D006979:Hyperthermia, Induced; D007263:Infusions, Parenteral / Q000379:methods; D016685:Mitomycin / Q000008:administration & dosage*; D010534:Peritoneal Neoplasms / Q000188:drug therapy* / Q000378:metabolism / Q000556:secondary*; D012008:Recurrence; D012189:Retrospective Studies
chemical_list: D000903:Antibiotics, Antineoplastic; D002272:Carcinoembryonic Antigen; D016685:Mitomycin