Colon cancer is a malignant neoplasm that develops in the tissues of the large or small intestine, most often in the rectum or colon. This disease is one of the most common oncological diseases in the world, which has a significant impact on the health of the population. The main pathogenesis of this disease is the mutation of cellular genes, which leads to uncontrolled cell division and tumor formation. Colon cancer can manifest itself both as localized formations and in a metastatic form, in which the tumor spreads to other organs. In this context, timely diagnosis and adequate treatment play a key role in increasing the chances of a successful outcome.
History of the disease and interesting historical facts
Colon cancer has been known since ancient times. The first mentions of this disease can be found in the works of ancient Greek doctors, such as Hippocrates, who described symptoms similar to modern manifestations of the disease. In the 18th century, the first attempts at surgical intervention for colon cancer were made, but the methods were extremely primitive and less effective. Modern research began to advance significantly in the late 20th century, when new diagnostic and treatment methods were developed, such as the use of colonoscopy and chemotherapy. Interesting fact: in the 2000s, a mutation in the APC gene associated with the development of this disease was identified, which opened up new horizons for studying its etiology.
Epidemiology
According to the World Health Organization, bowel cancer is the third most common cancer. According to statistics, more than 1.9 million new cases were registered in 2020 among both men and women. In particular, in countries with a high standard of living, this disease is diagnosed more often, which is associated with lifestyle and dietary habits. For example, the probability of developing bowel cancer in men is 1 in 23, and in women - 1 in 25. With age, the risk increases, especially after 50 years, which requires special attention to preventive examinations and screenings.
Genetic predisposition to this disease
Genetic predisposition plays a significant role in the development of bowel cancer. There are several genes, mutations of which are associated with a high risk of developing this disease. First of all, this is the APC gene, which, when mutated, creates a predisposition to familial adenomatous polyposis. Also important are the MLH1, MSH2, MSH6 and PMS2 genes, responsible for the development of Lynch syndrome. Statistics show that the presence of bowel cancer in close relatives increases the risk of the disease. Therefore, people with a family history should undergo regular examinations.
Risk factors for the development of this disease
Risk factors for colon cancer include both genetic and environmental factors:
- Age – the risk increases after age 50.
- Family history of disease – special attention should be paid to individuals with relatives who have had cancer.
- Dietary habits - high animal fat and low fiber in the diet.
- Physical inactivity – a sedentary lifestyle increases the risk.
- Chronic inflammatory bowel diseases – ulcerative colitis and Crohn's disease.
- Smoking and alcohol abuse are both factors that negatively affect the intestinal mucosa.
Diagnosis of this disease
Various research methods are used to diagnose bowel cancer:
- The main symptoms are: changes in bowel habits, blood in the stool, abdominal pain, weight loss and constant fatigue.
- Laboratory tests: stool test for occult blood, biochemical tests to assess liver function.
- Radiological examinations: barium x-ray and computed tomography to visualize neoplasms.
- Other types of diagnostics: colonoscopy, which allows you to see the intestines from the inside and perform a biopsy if necessary.
- Differential diagnosis: other bowel diseases such as diverticulitis and ulcerative colitis must be excluded.
Treatment
Treatment for bowel cancer depends on the stage of the disease and the patient's condition:
- General treatment: includes diagnosis, development of an individual treatment plan and regular monitoring.
- Pharmacological treatment: the use of chemotherapy to kill cancer cells, both before and after surgery.
- Surgical treatment: resection of the tumor and, if necessary, surrounding tissues, facilitating the complete removal of the neoplasm.
- Other treatments include radiation therapy to kill any remaining cancer cells after surgery or if surgery is not possible.
List of medications used to treat this disease
Drugs used to treat bowel cancer include:
- Fluorouracil (5-FU) is a standard chemotherapy drug.
- Oxaliplatin – used in combination with other drugs.
- Irinotecan – used in the treatment of metastatic cancer.
- Monoclonal antibodies such as cetuximab and bevacizumab.
- New drugs, including immunotherapies such as pembrolizumab.
Disease monitoring
Monitoring after treatment for bowel cancer is essential:
- Control stages: require regular examinations, colonoscopies and occult blood tests.
- Prognosis: depends on the stage of the disease and the patient's ability to adhere to prescribed treatment.
- Complications: relapse of the disease and development of metastases to other organs are possible.
Age-related features of the disease
Age-related features of bowel cancer vary:
- In young patients: the course is more aggressive and is most often detected in the later stages.
- In older adults: May be more common, but also includes a higher likelihood of comorbidities, making treatment more difficult.
- In adolescents: However, bowel cancer is extremely rare and is often associated with genetic syndromes.
Questions and Answers
- What are the main symptoms of bowel cancer? The main symptoms are changes in stool, the presence of blood, digestive problems, abdominal pain and unexplained weight loss.
- How often should you be screened for bowel cancer? It is recommended to undergo examination starting at age 50, and if there are risk factors, earlier and more often.
- Can diet affect your risk of developing bowel cancer? Yes, certain foods can increase your risk, so it's important to watch your diet and include enough fiber.
- What treatments are used when diagnosed with bowel cancer? Treatment may include surgery, chemotherapy, and in some cases, radiation therapy.
- What is the prognosis for people who have had colon cancer? The prognosis depends on the stage and other factors, but with early diagnosis, survival rates reach 90%.
It is important to remember that colon cancer can be prevented. Dr. Oleg Korzhikov recommends:
— Maintain an active lifestyle and a balanced diet rich in fruits and vegetables.
— Pay attention to regular medical examinations, especially if you have a predisposition.
— Listen to your body: don’t ignore symptoms such as abdominal pain and changes in stool.
— Talk to your doctor about any anxiety you may have and follow any treatment plan you receive.
Following these simple guidelines can help reduce your risk of developing bowel cancer and improve your chances of successful treatment if needed.
