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Table 1 Number of patients with various ultrasound signs and their assignments

From: Greater Omentum Imaging-Reporting and Data System: establishing the grade of benign and malignant lesions of the greater omentum using ultrasonography

Ultrasonic signs Malignant (Num.) Benign (Num.) Odds ratio (OR) Assignment
650 233
Direct sign
 Omental thickness
  >1.90 cm 580 176 2.68
  <1.90 cm 70 57 0.37
 Omental display site
  entire 134 65 0.67
  local 516 168 1.49
 Omental echo
  hyperechoic 209 98 0.65 1
  hypoechoic 347 11 23.11 3
  high–low mixed echo 94 124 0.15 0
Omental structure
  moth-eaten 90 3 12.32 3
  dense 454 54 7.72 2
  loose 105 176 0.06 0
 Omental blood flow
  No blood flow 1 1 0.36
  point-strip 366 178 0.40
  branch 283 54 2.56
 Nodules in the omentum
  with 182 14 6.08 2
  without 468 219 0.16 0
Indirect sign
 Ascites volume
  none 8 5 0.57
  small 47 28 0.57
  medium 384 103 1.82
  large 211 97 0.67
 Ascites separation
  with 9 50 0.05 0
  without 641 183 19.46 3
 Ascites echo
  homogeneous 499 225 0.12 0
  heterogeneous 151 8 8.51 2
 Aggregation of intestinal tube
  with 26 24 0.35
  without 624 209 2.89
 Mesenteric lymph node
  display 25 26 0.3 1
  Not display 625 207 3.3 2
 Peritoneum wall
  display 64 62 0.3 1
  Not display 586 171 3.12 2