Esophageal cancer is a malignant neoplasm that forms in the tissues of the esophagus, the organ responsible for transporting food from the throat to the stomach. This disease can develop from various types of cells, and the main forms are adenocarcinoma and squamous cell carcinoma. The presence of a malignant tumor in the esophagus can lead to symptoms such as difficulty swallowing, weight loss, chest pain, and persistent cough. The difficulty in diagnosing it is often due to the fact that in the early stages, cancer may not cause obvious clinical manifestations.
History of the disease and interesting historical facts
The history of esophageal cancer goes back several centuries. The first descriptions of the disease can be found in the works of Hippocrates, who mentioned "growths" in the throat area. In the Middle Ages, esophageal cancer was given insufficient attention, which led to misunderstandings in its diagnosis and therapy. Progress in understanding the pathogenesis of this disease began in the 19th century, when the English pathologist Richard Owen first described morphological changes in tissues. The first surgical interventions on the esophagus were performed at the beginning of the 20th century, which opened up new horizons for treatment. Modern medicine provides many methods of diagnosis and treatment, which allows to significantly improve the prognosis for patients.
Epidemiology
Esophageal cancer is a public health problem, especially in some regions where its prevalence reaches critical levels. According to the World Health Organization, approximately 500,000 new cases of the disease are registered worldwide each year. In Russia, the incidence rate is from 2 to 8 cases per 100,000 population, with higher rates observed in Eastern Europe and Asia. It is important to note that the incidence of esophageal cancer varies significantly depending on geographic and ethnic factors.
Genetic predisposition to this disease
Research shows that genetic predisposition plays a role in the development of esophageal cancer. Scientists have identified several genes whose mutations can increase the risk of developing this pathology. These genes include TP53, EPHB2, and CDKN2A. Changes in these genes can contribute to abnormal cell growth and disruption of cell cycle regulation, which in turn leads to malignant transformation. However, environmental factors also play a significant role in the development of the disease.
Risk factors for the development of this disease
There are various risk factors that contribute to the development of esophageal cancer, which can be divided into physical and chemical. Chemical factors include:
- Long-term smoking.
- Alcohol abuse.
- Exposure to carcinogenic substances (eg, asbestos).
Physical factors include:
- Chronic diseases of the esophagus, such as esophagitis and reflux disease.
- Genetic predisposition, as already mentioned.
- Age over 50 years.
There are also dietary factors such as insufficient consumption of fruits and vegetables, as well as overindulgence in spicy and hot foods.
Diagnosis of this disease
Diagnosis of esophageal cancer requires a comprehensive approach, including both clinical and instrumental methods. The main symptoms that the doctor should pay attention to are:
- Difficulty swallowing food (dysphagia).
- Chest pain.
- Unsystematic weight loss.
- Persistent cough.
Moving on to laboratory tests, first of all, it is worth mentioning endoscopy with biopsy, which allows not only to visualize changes, but also to obtain material for histological analysis. Radiological studies, such as barium X-ray and computed tomography, can help in assessing the spread of the disease and determining the stage. Other types of diagnostics include PET scanning and ultrasound examination of the abdominal organs. It is also important to conduct a differential diagnosis with other diseases of the esophagus, such as stricture or benign tumors.
Treatment
Treatment for esophageal cancer depends on the stage of the disease, the extent of the tumor, and the patient's overall condition. In general, it includes:
- Surgical intervention - resection of part or all of the esophagus.
- Radiation therapy is used as a stand-alone method or as an adjunct to surgery.
- Chemotherapy - may be used before surgery to shrink the tumor or after to prevent recurrence.
Pharmacological treatment aims to reduce symptoms and improve the patient’s quality of life. Other treatments, such as targeted therapy, are becoming increasingly important. These include drugs that target specific molecules that drive tumor growth.
List of drugs used to treat this disease
Medicines used to treat esophageal cancer include:
- Cispatine.
- Fluorouracil.
- Doxorubicin.
- Trastuzumab (for HER2-related adenocarcinoma).
These drugs can be used both as part of chemotherapy and as part of complex treatment.
Disease monitoring
Monitoring the patient's condition after treatment for esophageal cancer includes regular examinations aimed at identifying possible relapses. The prognosis for patients depends on the stage of the disease at the time of diagnosis:
- In the early stages, the five-year survival rate is 80%.
- In the later stages, this figure drops significantly to 20-30%.
Complications may include esophageal strictures, gastric dysfunction, and metastases to other organs.
Age-related features of the disease
Esophageal cancer is most common in people over 50, but in recent years there has been an increase in incidence among younger patients. In older people, the disease often manifests itself less aggressively, while younger people may experience a faster tumor growth rate and severe forms of the disease, which is associated with a higher likelihood of genetic mutations.
Questions and Answers
- What are the main symptoms of esophageal cancer? The main symptoms are difficulty swallowing, chest pain, abnormal weight loss and cough.
- How is esophageal cancer diagnosed? Diagnostics include endoscopy with biopsy, radiography and computed tomography.
- What is the prognosis for patients with esophageal cancer? The prognosis depends on the stage of the disease; in the early stages, survival is up to 80%.
- What are the risk factors associated with esophageal cancer? Major risk factors include smoking, alcohol abuse, and chronic esophageal disease.
Advice from Dr. Oleg Korzhikov
Dr. Oleg Korzhikov recommends paying attention to the main risk factors and leading a healthy lifestyle to reduce the likelihood of developing esophageal cancer. Regular medical examinations and screenings, especially for risk groups, can significantly affect early diagnosis. It is important to monitor symptoms and, if there is any suspicion, consult a doctor at an early stage. Changes in eating habits, quitting smoking, and limiting alcohol can be important steps towards preventing this disease.
