A Study of the Use of the Medtronic Pump and Codman Catheter to Give Chemotherapy to Patients With Colorectal Carcinoma or Cholangiocarcinoma

Group 1 unresectable liver metastases from colorectal cancer \- Patients will receive either FOLFIRI, FOLFOX, Irinotecan or Irinotecan/oxaliplatin (anti- EGFR agent may be added to any of the systemic treatments) on Days 1 and 15 of each cycle, however initiation with systemic chemotherapy will not take place until 4 weeks post-surgery for pump placement. Group 2 resectable liver metastases from colorectal cancer - Patients will receive either FOLFIRI, FOLFOX, Irinotecan or Irinotecan/oxaliplatin on Days 1 and 15 of each cycle, however initiation with systemic chemotherapy will not take place until 4 weeks post-surgery for pump placement. Group 3 unresectable cholangiocarcinoma \- Patients will receive Gemcitabine (800 mg/m2 IV over 30 minutes) and Oxaliplatin (85 mg/ m2 IV over 120 minutes) or Gemcitabine (1000 mg/m2 IV over 30 minutes) alone on Days 1 and 15 of each cycle, however initiation with systemic chemotherapy will not take place until 4 weeks post-surgery for pump placement.