Abstract:
Introduction: Intrahepatic cholangiocarcinoma (ICC) is the second most common primary neoplasm of the liver after hepatocellular carcinoma (HCC). Although an underlying cause is not usually found, liver flukes, cirrhosis, primary sclerosing cholangitis, and viral hepatitis have been found to increase the risk in recent years. In this study, we aimed to present our experience on ICC and compare the outcomes of patients with a concomitant liver pathology and with incidentally detected ICC. Patients and Methods: Thirty-three patients who underwent surgical resection for ICC were included in the study. Patients were divided into two groups, group one (with concomitant liver disease, n = 13) and group two (incidentally detected ICC, n = 18). Demographics, perioperative findings, pathological properties, recurrence rates, and survival rates were retrospectively analyzed and compared between the groups. Results: The mean age of patients was 59.77 ± 9.81 years, of whom sixteen (51.6%) were males. Thirteen patients (41.9%) had concomitant liver disease, the most common being chronic hepatitis B infection. Eighteen patients (58.1%) had incidentally detected ICC. There were no significant differences between the groups except for follow-up time and recurrence rate. The recurrence rate was significantly higher in the incidentally detected ICC group (61.1% versus 7.7%, p = 0.003). Follow-up time was significantly higher in patients with concomitant liver disease (42 versus 17.5 months, p = 0.007). The mortality rate was higher in the incidentally detected ICC group (55.6 to 23.1%, p = 0.071) but the difference did not reach statistical significance. Conclusion: Surgical resection in ICC patients with underlying liver disease is associated with better prognosis than in incidentally detected ICC patients. Incidental ICC may be a different tumor with different biology, hence the high recurrence rates. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.