Second and third look laparoscopy in pT4 colon cancer patients for early detection of peritoneal metastases; the COLOPEC 2 randomized multicentre trial

Table 1 Routine follow-up schedule

TIMEPOINT months after primary resection	3	6	9	12	15	18	21	24	30	36	48	60
CEA	X	X	X	X	X	X	X	X	X	X	X	X
Abdominal CT		X	X^a			X
Ultrasound / CT liver				X				X		X	X	X
Colonoscopy				X							X
Diagnostic laparoscopy		X	X^a			X^b

ISSN: 1471-2407