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Computed tomography findings suggestive of obstruction versus per-operative obstruction: cross tabulation.
| Per-operative obstruction | Total | ||
|---|---|---|---|
| No | Yes | ||
| CT finding-presence of obstruction | |||
| No | 7 | 3 | 10 |
| Yes | 3 | 17 | 20 |
| Total | 10 | 20 | 30 |
CT, computed tomography.
