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Table 4 Comparison of the incidence of colorectal cancers with submucosal invasion depth ≥ 1.8 mm between the combinations of horizontal and vertical rigidities under the barium enema examination profile view

From: Role of barium enema examination for the diagnosis of submucosal invasion depth in T1 colorectal cancers

145 lesions

Positive for horizontal and vertical rigidity (n = 87)

Positive for either rigidity (n = 22)

Negative for both rigidities (n = 36)

P value

Depth of submucosal invasion, n (%)

< 1.8 mm

12 (13.8)

12 (54.5)

29 (80.6)

0.0001

≥1.8 mm

75 (86.2)*

10 (45.5)*

7 (19.4)

  1. Positive for horizontal rigidity is defined as horizontal rigidity ≥4.5 mm. Positive for vertical rigidity is defined as vertical rigidity ≥0.7 mm
  2. *P = 0.0006, P = 0.0003