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Combined Hepatocellular Cholangiocarcinoma: A Population-Based Retrospective Study
Daryl Ramai1, Andrew Ofosu2, Jonathan K Lai3
1Department of Medicine, The Brooklyn Hospital Center, Clinical Affiliate of The Mount Sinai Hospital, Brooklyn, New York, USA.
The American Journal of Gastroenterology
|July 24, 2019
Summary
Combined hepatocellular cholangiocarcinoma (CHC) incidence is increasing, particularly in older men. Surgery significantly improves survival, while lack of surgical treatment poses the highest mortality risk for this rare liver cancer.
Area of Science:
- Hepatobiliary cancers
- Gastroenterology
- Oncology
Background:
- Combined hepatocellular cholangiocarcinoma (CHC) is a rare primary liver cancer merging features of hepatocellular carcinoma and cholangiocarcinoma.
- Understanding CHC's epidemiology and outcomes is crucial for patient management.
Purpose of the Study:
- To investigate the incidence, demographics, tumor characteristics, treatment patterns, and survival rates of CHC patients.
- To identify factors influencing outcomes in CHC.
Main Methods:
- Analysis of data from the Surveillance, Epidemiology, and End Results (SEER) Registry between 2004 and 2014.
- Identification of 529 CHC patients and assessment of their demographic, clinical, and survival data.
Main Results:
- The overall incidence of CHC was 0.05 per 100,000 person-years, increasing with age and higher in women.
- Most CHC tumors were poorly differentiated (30.8%) and diagnosed at stage 4 (26.8%).
- One- and 5-year survival rates were 41.9% and 17.7%, respectively, with a median survival of 8 months. Surgery, radiation, and chemotherapy were associated with improved outcomes, with lack of surgery being the strongest predictor of mortality.
Conclusions:
- CHC incidence appears to be rising, with higher rates in older individuals and women.
- While treatments like surgery, radiation, and chemotherapy improve survival, surgical intervention is critical for better outcomes.
- Patients not undergoing surgery face the highest risk of mortality from CHC.
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