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Table 4 Comparison between the two studied groups according to different imaging parameters

From: Imaging of metastatic cervical nodes: is CT helpful in differentiation of squamous cell carcinoma (SCC) from non-SCC groups?

  SCC χ2 p
SCC (n = 94) Non-SCC (n = 63)
Necrotic
 Non-necrotic 17 (18.1%) 14 (22.2%) 19.536* < 0.001*
Necrotic 74 (78.7%) 33 (52.4%)
 Cystic 3 (3.2%) 16 (25.4%)
Necrosis central/peripheral (n = 107) (n = 74) (n = 33)   
 Central 72 (97.3%) 30 (90.9%) 4.030 MCp = 0.116
 Peripheral 0 (0%) 2 (6.1%)
 Central and peripheral 2 (2.7%) 1 (3%)
Margin regularity (n = 107) (n = 74) (n = 33)   
 Irregular 41 (55.4%) 16 (48.5%) 0.439 0.508
 Regular 33 (44.6%) 17 (51.5%)
Enhancing margin thickness (n = 107) (n = 74) (n = 33)   
 Thin 13 (17.6%) 5 (15.2%) 0.246 0.884
 Thick 56 (75.7%) 25 (75.8%)
 Very thick 5 (6.8%) 3 (9.1%)
Combined (n = 107) (n = 74) (n = 33)   
 Irregular + thin 3 (4.1%) 1 (3%) 2.292 MCp = 0.867
 Irregular + thick 36 (48.6%) 13 (39.4%)
 Irregular + very thick 2 (2.7%) 2 (6.1%)
 Regular + thin 10 (13.5%) 4 (12.1%)
 Regular + thick 20 (27%) 12 (36.4%)
 Regular + very thick 3 (4.1%) 1 (3%)
Pattern/heterogeneity of central necrosis (n = 107) (n = 74) (n = 33)   
 Homogenous 21(28.4%) 9 (27.3%) 0.014 0.906
 Heterogeneous 53 (71.6%) 24 (72.7%)
Degree of rim enhancement in necrotic node (n = 107) (n = 74) (n = 33)   
 ISO 68 (91.9%) 18 (54.5%) 24.112* MCp < 0.001*
 Hyper 2 (2.7%) 8 (24.2%)
 Mild hyper 4 (5.4%) 2 (6.1%)
 Very hyper 0 (0%) 5 (15.2%)
  1. χ2 chi-square test, MC Monte Carlo, p p value for comparing between the two studied groups
  2. *Statistically significant at p ≤ 0.05