The aim of the study is to observe whether cola ingestion can improve the 24-hour remission rate of acute esophageal impaction in patients with esophageal cancer.

Inclusion Criteria:

1. Patients with primary esophageal lesions diagnosed by pathology, being able to consume at least a liquid diet normally before and diagnosed by a physician with acute esophageal impaction (acute esophageal impaction refers to the sudden occurrence of complete obstruction of eating within the past week)
2. Prior to enrollment, the patient did not consume carbonated beverages such as cola, or any other treatment for esophageal impaction.
3. Age ≥ 18 years old, Eastern Cooperative Oncology Group (ECOG) Performance Status score is 0-2 points.
4. The subjects voluntarily enrolled and obtained an informed consent form signed by the patient or their legal representative.

Exclusion Criteria:

1. It is known that complete esophageal obstruction is caused by tumor progression.
2. Patients who have been diagnosed with or highly suspected of having esophageal fistula through endoscopy or imaging prior to enrollment.
3. Patients with nasogastric nutrition tube and esophageal stent implantation
4. Patients who have symptoms such as coughing and are unable to drink cola, or who are at serious risk of aspiration (Glasgow Coma Scale<14 or previous history of aspiration).
5. Benign diseases such as gastroesophageal reflux, cardiac arrest, and congenital esophageal stenosis that can easily lead to foreign body impaction in the esophagus.
6. Patients with coagulation dysfunction, thrombocytopenia, or taking anticoagulant drugs that are medically considered contraindications for endoscopic examination and treatment.
7. According to the researchers' assessment, patients may not be able to cooperate with the examination and treatment, or there may be other factors that could force them to terminate the study midway, such as having other serious illnesses (including mental illnesses) that require concomitant treatment, severe abnormal laboratory test values, family or social factors, which may affect the safety of the patients or the collection of experimental data.