Table 2. Data of the 30 Patients With CEA Levels Available at the Time of Primary, Non Metastatic Rectal Cancer Based on Tumour Relation to the Reflection of the Peritoneal Fold.

Tumour location	CEA normal	CEA elevated	Total patients
High	12	1	13
Low	17	0	17

CEA: Carcinoembryonic antigen.