Key result
Abdominal CT findings of complex collections >5 cm or generalized peritonitis are linked to anastomotic leakage.
Why the study?
Early detection of anastomotic leakage after low anterior resection without a protective ileostomy is crucial for patient recovery and survival.
Does abdominal CT scan on the fifth postoperative day accurately identify anastomotic leakage in patients post-LAR for rectal cancer?
Cohort (n=42)
No
Does abdominal CT scan on the fifth postoperative day accurately identify anastomotic leakage in patients post-LAR for rectal cancer?
p-value: p=0.000
Abdominal CT scans on the fifth postoperative day, particularly identifying complex collections >5 cm, are valuable for early detection of anastomotic leakage when interpreted alongside clinical symptoms.
Anastomotic leakage (AL) is one of the most serious complications following colorectal surgery, particularly in patients who have undergone low anterior resection (LAR) for rectal cancer without a protective ileostomy. The early detection of AL is crucial, as it can significantly impact the patient's recovery and survival rates. This study aims to assess the diagnostic accuracy of abdominal Computed Tomography(CT) scans in identifying AL among rectal cancer patients post-LAR. This retrospective cohort study was conducted at the Tehran Surgical Research Center and included 42 patients with rectal cancer who underwent LAR after neoadjuvant chemoradiotherapy. All patients received an abdominal CT scan on the fifth postoperative day. The presence of AL was confirmed based on clinical symptoms, radiological findings, and the necessity for reoperation. The study focused on evaluating specific CT findings, such as perianastomotic collections, to determine their correlation with AL. The analysis revealed that certain CT scan findings, particularly complex collections larger than 5 cm in proximity to the anastomosis site and signs of generalized peritonitis, were significantly associated with the presence of AL. These findings were particularly important in cases where patients also exhibited clinical symptoms like fever and leukocytosis. The presence of these CT indicators often necessitated reoperation to address the leakage. The results of this study suggest that while abdominal CT scans are a valuable tool in the early detection of AL, the interpretation of these scans must be done in conjunction with clinical symptoms. The study highlights the importance of considering the size of perianastomotic collections and the presence of systemic symptoms for an accurate and timely diagnosis of AL. Future research should further investigate the potential of CT scans in improving outcomes for patients undergoing LAR for rectal cancer.
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Notash et al. (2025) conducted a cohort in Rectal cancer post-low anterior resection (n=42). Abdominal CT scan findings (complex collections > 5 cm or generalized peritonitis) vs. Absence of these CT findings was evaluated on Anastomotic leakage (p=0.000). Abdominal CT scan findings of complex collections larger than 5 cm or generalized peritonitis were significantly associated with anastomotic leakage (p=0.000).
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