From: Validity of MDCT cholangiography in differentiating benign and malignant biliary obstruction
Enhancement in MDCT cholangiography | Malignant causes | Benign causes | Test± | p value (Sig.) | ||
---|---|---|---|---|---|---|
(N=41) | (N=28) | |||||
No. | % | No. | % | |||
Arterial phase | ||||||
 Absent | 18 | 43.9% | 23 | 82.1% | 13.956 | <0.001 (HS) |
 Present | 23 | 56.1% | 5 | 17.9% | ||
  Rim | 10 | 24.4% | 3 | 10.7% | 15.840 | 0.001 (S) |
  Homogenous | 4 | 9.8% | 2 | 7.1% | ||
  Heterogeneous | 9 | 21.9% | 0 | 0% | ||
Porto-venous phase | ||||||
 Absent | 30 | 73.2% | 25 | 89.3% | 3.920 | 0.048 (S) |
 Present | 11 | 26.8% | 3 | 10.7% | ||
  Rim | 0 | 0% | 2 | 7.1% | 9.910 | 0.019 (S) |
  Homogenous | 7 | 17.1% | 1 | 3.6% | ||
  Heterogeneous | 4 | 9.7% | 0 | 0% | ||
Delayed phase | ||||||
 Absent | 40 | 97.6% | 27 | 96.4% | 0.021 | 1.000 (NS) |
 Present | 1 | 2.4% | 1 | 3.6% | ||
  Rim | 0 | 0% | 1 | 3.6% | 2.042 | 0.360 (NS) |
  Homogenous | 1 | 2.4% | 0 | 0% | ||
  Heterogeneous | 0 | 0% | 0 | 0% |