Gastroesophageal junction cancer (GEJC) is a malignant neoplasm that occurs at the junction of the esophagus and stomach. Most often, this disease is associated with adenocarcinoma and squamous cell carcinoma. The pathology is characterized by digestive disorders, often manifested by symptoms of dyspepsia, anorexia, and chest pain, which ultimately leads to a significant deterioration in the patient's quality of life. Anatomically, this area is an important connecting link, which makes it susceptible to tumor changes as a result of various influences - both external and internal factors. Effective consideration of this disease requires an understanding of its etiopathogenetic mechanisms, pathophysiology, and approaches to diagnosis and treatment.
History of the disease and interesting historical facts
In the history of medicine, gastroesophageal junction cancer has been known for over a century. The first mentions of this pathology were documented in medical texts of Ancient Egypt and Greece. However, significant attention to this disease was attracted by studies conducted in the early 20th century, when imaging methods such as X-rays and endoscopy began to be widely used, which allowed for more accurate diagnosis of tumors in this area. Interestingly, in the 1950s, it was established that a mutation in the TP53 gene is associated with the development of many cancers, including gastroesophageal junction cancer. Over the decades, further studies have been conducted that have helped in identifying the actual causes and mechanisms of the development of this disease.
Epidemiology
In studies related to the epidemiology of gastroesophageal junction cancer, it is found that the incidence tends to increase. According to statistics, in recent decades, the incidence of gastroesophageal junction adenocarcinoma has increased by 400% in high-standard-of-living countries, which is associated with changes in diet and lifestyle. Studies conducted in 2020 found that esophageal cancer occupies about 3% among all malignant neoplasms, and their prevalence varies depending on the geographic area. For example, in Asia, the incidence is higher than in Europe and North America.
Genetic predisposition to this disease
Scientific research shows that genetic predisposition plays a key role in the development of gastroesophageal junction cancer. Significant mutations in a number of genes, such as TP53, CDKN2A, and ERBB2, are associated with an increased risk of developing this disease. Mutations in the TP53 gene, which is responsible for the cell cycle and apoptosis, are the most important. According to data, about 30-50% of all cancer cases in this area are associated with dysfunction of this gene. Given these facts, genetic testing is becoming a relevant tool in early diagnosis and risk group determination. It is important to note that genetic load can be combined with exogenous factors, creating a serious health risk.
Risk factors for the development of this disease
Despite genetic factors, there are a number of external factors that contribute to the development of gastroesophageal junction cancer. The main risk factors include:
- Chronic diseases: reflux disease, esophagitis.
- Poor diet: high consumption of processed foods, fats, low consumption of fruits and vegetables.
- Smoking and alcohol: factors playing a critical role in carcinogenesis.
- Infections: identification of Helicobacter pylori as one of the possible precursors of adenocarcinoma.
- Age: The risk increases with age, especially after age 50.
According to available studies, the risk of developing gastroesophageal junction cancer increases several times in people who consume large amounts of alcohol and tobacco. In addition, a history of atrophic gastritis and dysplasia also significantly increases the likelihood of its occurrence.
Diagnosis of this disease
Diagnosis of gastroesophageal junction cancer involves a multi-level approach that combines both clinical and instrumental methods. The main symptoms that may indicate the presence of the disease include:
- Dyspepsia and dyspagia are difficulties in eating.
- Chest pain and late pain that occurs after swallowing.
- Loss of weight and appetite.
- Nausea and vomiting, which may be associated with obstruction of the lumen.
Laboratory tests may include blood tests for tumor markers such as CEA and CA 19-9. Radiologic examinations are most often performed using barium x-rays, as well as CT and MRI to assess the extent of the tumor. Endoscopy with biopsy remains the "gold standard" for confirming the diagnosis. Differential diagnosis should be made with diseases such as benign esophageal stricture, peptic ulcer disease and other malignancies.
Treatment
Treatment of gastroesophageal junction cancer depends on the stage and characteristics of the tumor. The main methods of therapy are:
- Surgical treatment includes resection of the conditions and lymphadenectomy, which allows achieving the best results with early detection.
- Pharmacological treatment - includes chemotherapy (eg, docetaxel and paclitaxel), used in both adjuvant and palliative care.
- Radiation therapy can be used both at the preoperative stage and as an independent method.
- Immunotherapy - new approaches including checkpoint inhibitors have become an important avenue for treatment.
Launching a comprehensive approach already at the early stages of the disease can significantly increase the chances of survival and improve the quality of life of patients.
List of medications used to treat this disease
Unfortunately, there is no universal treatment regimen for gastroesophageal junction cancer. However, among the most commonly used drugs are:
- Cisplatin
- Fluorouracil
- Topotecan
- Trakvirazine
- Nepatasir
In addition, targeted molecules are recommended to reduce tumor activity and avoid side effects in patients.
Disease monitoring
Monitoring of patients with gastroesophageal junction cancer is necessary throughout the entire course of subsequent treatment. The prognosis depends on the stage of detection of the disease and the inclusion of innovative methods in the treatment plan. Possible complications may include:
- Esophageal stenosis and subsequent digestive problems.
- Metastasis to neighboring organs and lymph nodes.
- Relapse of the disease and the need for re-treatment.
Constant monitoring using endoscopy and computed tomography allows for timely detection of relapses and adjustment of treatment.
Age-related features of the disease
Age-related differences in the manifestation of gastroesophageal junction cancer can be significant. In younger patients (under 40 years), the disease is most often caused by genetic factors. In middle-aged people (40-60 years), chronic diseases and exogenous factors are more active. In older people, as a rule, a combination of risk factors occurs, which lead to more difficult diagnosis and treatment. Therapy approaches should be adapted depending on the age and condition of the patient.
Questions and Answers
- What are the symptoms of gastroesophageal junction cancer?
The main symptoms are difficulty swallowing, chest pain, weight loss and dyspepsia. - How to diagnose gastroesophageal junction cancer?
Diagnosis includes clinical examination, endoscopy and biopsy, as well as barium x-ray. - What are the risk factors for this disease?
Major risk factors include smoking, alcohol consumption, poor nutrition and the presence of chronic diseases. - What treatment methods are used?
Treatment options may include surgical resection, chemotherapy, and radiation therapy. - What is the prognosis for patients with gastroesophageal junction cancer?
The prognosis depends on the stage of the disease, but early diagnosis significantly improves the chances of successful treatment.
Advice from Dr. Oleg Korzhikov
Dr. Oleg Korzhikov notes that one of the main questions among patients is how to prevent the development of gastroesophageal junction cancer. Here, it is necessary to focus on maintaining a healthy lifestyle, including proper nutrition, quitting smoking and alcohol, and regular medical examinations. It is also important to take into account genetic predisposition and, if there are risk factors, contact specialists for preventive examinations and, if necessary, the use of early diagnostic methods. Support from loved ones and awareness of the disease also help to draw attention to their symptoms and seek help earlier.
