Large right inferolateral abdominal wall hypoattenuating collection noted, measuring 9x4cm on axial plane. This does not have an enhancing wall and is most likely a sterile liquefying haematoma or a seroma, rather than an infected collection.
Lateral descending colon hypoattenuating regions identified with subtle peripheral enhancement, which may represent small collections (3.7x1.9cm). They exhibit local mass effect on the colon, suggesting they may be trapped in peritoneal reflections (lateroconal fascia).
Small hypoattenuating regions also noted within the posterior aspect of the liver, which are probably temporal evolution of the small parenchymal lacerations undetectable on the initial scan. Given the appearance of these, hepatic/retrohepatic collections or abscesses were considered unlikely.
Small locule of intraperitoneal free gas. Bowel resection and anastomosis noted.
Left inferolateral abdominal wall defect with adjacent haematoma. Small free intra-abdominal fluid layering between the loops of bowel and within subhepatic region (no walled-off).
Gas within bladder, probably related to the recent catheterization attempt.
Bilateral pleural effusions with right basal segmental atelectasis.
The remainder of the findings stable.
Conclusion:
Possible lateral proximal para-descending colon collections as described.