What are the causes of esophageal cancer?

Esophageal cancer is a common gastrointestinal malignancy, claiming approximately 300,000 lives worldwide each year. Its incidence and mortality rates vary significantly across different countries. So, what are the causes of esophageal cancer? Let’s explore them together.

What Causes Esophageal Cancer?

The exact etiology of esophageal cancer remains unclear, but it is likely associated with several contributing factors:

Genetic factors: Esophageal cancer exhibits a relatively prominent familial clustering pattern.

Unhealthy dietary habits: Long-term consumption of excessively hard or hot foods—or frequent intake of spicy, irritating foods—can chronically irritate the esophagus, leading to chronic inflammation. Prolonged chronic inflammation may predispose individuals to malignant transformation.

Biochemical factors: Nitrosamines possess strong carcinogenic properties. Certain bacteria and fungi can promote nitrosamine formation, thereby increasing cancer risk.

Malnutrition: Chronic deficiencies in vitamins or specific trace elements may also contribute to carcinogenesis.

Other factors: Chronic esophagitis and gastroesophageal reflux disease (GERD), among other long-standing esophageal conditions, may also predispose individuals to esophageal cancer.

What Symptoms Does Esophageal Cancer Cause?

1. Early-stage esophageal cancer: Patients are often asymptomatic. However, they may experience mild discomfort when swallowing hard foods—such as a sensation of food sticking or “catching” during swallowing, retrosternal burning, pricking, or traction-like pain, or varying degrees of food retention or foreign-body sensation. These sensations typically ease or resolve after drinking water.

2. Intermediate- to late-stage esophageal cancer: Patients commonly develop progressive dysphagia—initially with dry or solid foods, then advancing to semi-liquid and eventually liquid diets, and ultimately even water becomes difficult to swallow. Additional symptoms include progressive weight loss, dehydration, and generalized weakness. In advanced stages, patients may also experience chest or back pain.

We hope the above information is helpful to you.