"If someone in my family has had cancer, am I more likely to get it too?" This is a common concern among many people with a family history of cancer.
In fact, tumors do have a genetic predisposition, and individuals with a family history typically face a 2-3 times higher risk of developing the disease compared to the general population, or even higher. However, there is no need for excessive panic. Scientific and precise physical examination and screening can enable early detection and intervention, thereby minimizing the risk.
Unlike basic physical examinations for the general population, individuals with a family history of cancer need targeted "additional items". This guide helps you identify the right direction and avoid screening pitfalls.
Which family histories fall into the high-risk category?
Not all familial tumors have a genetic link; the key lies in the disease status of relatives. Three types of situations should be focused on:
Immediate family members (parents, children, sisters/brothers) have cancer;
Early-onset cancer in relatives under 50 years old;
If there are two or more individuals in the family who have suffered from the same or related types of cancer, they fall into the high-risk group. In such cases, targeted screening items should be added to the basic physical examination.
Add items precisely to avoid screening blind spots
01 Family history of lung cancer: priority for low-dose spiral CT
For individuals with a family history of lung cancer, the focus of screening should be on the lungs. The chest X-ray commonly used in regular physical examinations has a very low detection rate for early-stage lung cancer. High-risk individuals should switch to low-dose spiral CT, which is currently the "gold standard" for lung cancer screening. It can detect millimeter-sized small lesions and significantly reduce lung cancer mortality.
It is recommended to undergo screening once a year starting at the age of 40. If relatives have developed the disease at a younger age, screening can be initiated at the age of 35. Additionally, serum tumor markers such as CEA and SCC can be used as auxiliary screening tools to improve detection rates.
02 Family history of digestive tract tumors: dual protection with gastroscopy and colonoscopy
Individuals with a family history of digestive tract tumors (such as gastric cancer and colorectal cancer) should focus on gastrointestinal screening.
For individuals at high risk of gastric cancer, gastroscopy should be added to basic physical examinations. It is recommended to undergo the examination every 2-3 years starting from the age of 45. If there is Helicobacter pylori infection, eradication therapy should be administered first, followed by regular reexaminations.
For high-risk groups of colorectal cancer, colonoscopy screening is the preferred choice. It is the core method for early screening of colorectal cancer. Starting from the age of 45, individuals should undergo colonoscopy every 5-10 years. Alternatively, they can also undergo fecal immunochemical testing annually. Those who test positive should promptly undergo colonoscopy for confirmation.
In addition, tumor markers such as CA19-9 and CEA can be added for auxiliary diagnosis.
03 Family history of breast and ovarian cancer: safeguarding women's exclusive health
For those with a family history of breast and ovarian cancer, targeted measures should be taken to safeguard women's health.
Regarding breast health, starting at age 40, mammography (mammography) should be performed every 1-2 years. For dense breasts, it is recommended to combine it with breast ultrasound screening. If a relative has been diagnosed with breast cancer at an age younger than 40, breast MRI can be added to further improve the detection rate of early breast cancer.
Individuals at high risk of ovarian cancer, particularly those with BRCA1/2 gene mutations (refer to the 2024 Expert Consensus Document on BRCA Germline Mutation Screening), should undergo regular transvaginal ultrasound and serum CA125 testing. Blind screening for ordinary women is not recommended, but high-risk individuals need to follow their doctors' advice for regular check-ups.
04 Family history of liver cancer and prostate cancer: Precise monitoring without omissions
Individuals with a family history of liver cancer or prostate cancer should undergo targeted monitoring.
For individuals at high risk of liver cancer, specifically those aged 35 and above for males and 45 and above for females, undergoing liver ultrasound and alpha-fetoprotein (AFP) testing every six months is considered the "gold standard" for liver cancer screening. This approach enables the timely detection of early-stage liver cancer or precancerous lesions.
For high-risk groups of prostate cancer, men over 45 years old should undergo additional serum PSA testing every year. If the PSA level is abnormal, further prostate ultrasound or biopsy is needed for a definitive diagnosis.
Highlight: Remember these 3 key reminders
In addition to targeted additional items, there are three key reminders to keep in mind.
1. Screening should be initiated earlier, typically starting 5-10 years before the age at which a relative developed the disease. For instance, if a father was diagnosed with lung cancer at 50, his children could begin lung cancer screening at 40.
2. Avoid excessive screening. There is no need to blindly add all tumor marker tests. It is necessary to make precise choices based on the family history of cancer types to avoid unnecessary anxiety and economic burden.
3. Emphasize genetic counseling. If multiple relatives in the family have been diagnosed with cancer, genetic testing and counseling can be conducted to identify genetic risks and develop a personalized screening plan.
Having a family history of cancer is not a "sentence of cancer risk", but rather an added precaution to take precautions. Precision screening is not the more the better, but rather "adding items as needed". By combining family cancer types and the age of relatives when they were diagnosed, a personalized plan can be developed to achieve early detection, diagnosis, and treatment.
Health Management Center
The Health Management Center, relying on Hainan Cancer Hospital and Hainan Chengmei Hospital, is committed to implementing the "Healthy China" strategy, expanding the connotation and extension of traditional physical examination services, transforming and extending from disease treatment to health management, and providing health management services. It strives to build the most professional health management institution. Adhering to the service principle of "professional authority, customized exclusivity, and safeguarding health", the center has established a complete set of professional, refined, and standardized service processes in accordance with the central leaders' healthcare system. It provides professional services to high-end individuals such as provincial and ministerial leaders, foreign VIPs, corporate elites, and social celebrities.