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 15 December 2017

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News

Cancer surveillance and untreated liver cancer in the USA

The most recent issue of the Clinical Gastroenterology & Hepatology evaluates the natural history of untreated hepatocellular carcinoma in a cohort in the USA, and examines the role of cancer surveillance.

News image

Determining the natural history and predictors of survival in patients with untreated hepatocellular carcinoma (HCC) in the United States is useful to test existing tumor classifications, identify subgroups of patients likely to benefit from treatment, and estimate lead time related to HCC surveillance.

Dr Hashem El-Serag and colleagues from Texas, USA identified a national cohort of 518 veterans diagnosed with HCC from 2004 through 2011, with follow-up ending in 2014, who received no palliative or curative treatment. 

The research team examined the association between postdiagnosis survival and patient factors, tumor characteristics, and prediagnosis surveillance.

The mean age at HCC diagnosis was 66 years and most patients had hepatitis C. 

The researchers observed that almost all patients died within the observation period.

Nearly 28% received prediagnosis HCC surveillance
Clinical Gastroenterology & Hepatology
The team found that the median overall survival time was 4 months, and survival times were 13, 10, 3, and 2 months for patients of Barcelona Clinic Liver Cancer stages 0/A, B, C, and D, respectively. 

In addition, model for end-stage liver disease and levels of α-fetoprotein were predictive of survival. 

The research team noted that nearly 28% received prediagnosis HCC surveillance, which was associated with detection of disease at an earlier stage, and slightly longer survival than patients with no surveillance overall.

The researchers observed no difference in survival times of patients with 0/A stage who did versus did not receive surveillance.

Dr El-Serag's team concludes, "Patients with HCCs, including those detected through surveillance, survived for short time periods in the absence of treatment, irrespective of their initial stage at diagnosis."

"Model for end-stage liver disease scores and levels of α-fetoprotein were prognostic factors, independent of Barcelona Clinic Liver Cancer stage."

"The lead time related to detection by surveillance was modest, and therefore unlikely to explain the survival benefit associated with surveillance in previous studies."

Clin Gastroenterol Hepatol 2017: 15(2): 273–281.e1
15 February 2017

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