Table 4 Serum CEA levels before SIRT and the lowest level either 1 or 2 months after SIRT. A significant fall in CEA was seen in both groups after SIRT. The difference between the fall after SIRT in the two groups was not statistically significant.
| Â | Group 1 | Group 2 | |
|---|---|---|---|
| Â | "hot" | "equivocal" | "cold" |
CEA (ng/ml) pre-SIRT | Â | Â | Â |
   number of patients | 37 | 12 | 9 |
   mean ± sd (C.I.) | 2071 ± 5598 (267 – 3874) | 433 ± 628 (77 – 789) | 247 ± 390 (-8 – 502) |
   median (range) | 235 (1.1 – 25620) | 113 (1.8 – 1749) | 41 (4.3 – 1150) |
CEA (ng/ml) post-SIRT | Â | Â | Â |
   number of patients | 34/37 | 12/12 | 8/9 |
   mean ± sd (C.I.) | 428 ± 983 (97 – 758) | 50 ± 55 (19 – 81) | 41 ± 75 (-14 – 97) |
   median (range) | 15 (1.2 – 4590) | 42 (1.9 – 170) | 6 (0.8 – 216) |