Hepatocellular carcinoma epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Dildar Hussain, MBBS [2] Mohamad Alkateb, MBBCh [3]

Overview

Hepatocellular carcinoma is the 5th most common tumor worldwide. The epidemiology of hepatocellular carcinoma exhibits two main patterns, one in North America and Western Europe and the other in non-Western countries, such as those in Sub-Saharan Africa, Central Asia, Southeast Asia, and the Amazon basin. Men are affected more than women and it is more common between the 3rd and 5th decades of life. Hepatocellular carcinoma causes 662,000 deaths worldwide anually.

Epidemiology and Demographics

The epidemiology of hepatocellular carcinoma exhibits two main patterns, one in North America and Western Europe and the other in non-Western countries, such as those in Sub-Saharan Africa, Central Asia and Southeast Asia, and the Amazon basin. Although the incidence of hepatocellular carcinoma is increasing worldwide due to its association with viral infections; it still remains relatively uncommon in the United States and Western Europe. HCC is the fastest growing cause of cancer related deaths and the second most common cause of mortality among women.

Incidence

• The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
• In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.

Prevalence

• The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
• In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
• The prevalence of [disease/malignancy] is estimated to be [number] cases annually.

Case-fatality rate/Mortality rate

• In [year], the incidence of [disease name] is approximately [number range] per 100,000 individuals with a case-fatality rate/mortality rate of [number range]%.
• The case-fatality rate/mortality rate of [disease name] is approximately [number range].

Age

Hepatocellular carcinoma is more common between the 3rd and 5th decades of life.

Race

• There is no racial predilection to [disease name].
• [Disease name] usually affects individuals of the [race 1] race. [Race 2] individuals are less likely to develop [disease name].

Gender

Males are more affected than females.

Region

• The majority of [disease name] cases are reported in [geographical region].

• [Disease name] is a common/rare disease that tends to affect [patient population 1] and [patient population 2].

Developed Countries

Hepatocellular carcinoma is generally a rare tumor in the West. Metastasis from other parts of the body is the main cause for developing hepatocellular carcinoma in the western countries. Due to the advancement in the health care system in the western countries, hepatocellular carcinoma is usually discovered at early stages in comparison to the developing countries such as Sub-Saharan Africa.

Developing Countries

In some parts of the world, such as Sub-Saharan Africa and Southeast Asia, hepatocellular carcinoma is the most common cancer. It affects men more than women and the age of onset is between late teens and early 30s. This variation is due to the different methods of hepatitis B transmission in different populations. For example, infection at or around birth predispose to earlier cancers than if people are infected later. The time to develop hepatocellular carcinoma after hepatitis B infection can varies from years to decades. The average survival time from the time of hepatocellular carcinoma diagnosis to death is about 5.9 months and about 3 months (median survival time) in Sub-Saharan Africa according to Manson's textbook of tropical diseases. Hepatocellular carcinoma is one of the deadliest cancers in China.