*9.4.3 Contrast CT scan*

A **contrast CT scan (CCT)** is frequently used to detect postoperative complications in colorectal procedures. In many centers, the preferred modality was the abdominal and pelvic CCT, providing a more detailed image of anastomosis and neighboring structures or findings, such as abscesses or hematoma (**Figure 1**). A combination of CCT with WSCE can identify a set of highly suggestive findings of CAL, such as the endoluminal contrast extravasation, presence of pneumoperitoneum, or perianastomotic collection. CCT with WSCE may reduce this false-negatives rate, mainly in lower colorectal anastomosis [145].
