Esophageal cancer

Disease Description (Causes and Symptoms)

• Definition and pathophysiology: A malignant tumor arising in the esophagus, classified by location (cervical, thoracic, or lower esophagus) and histologic type (in Korea, most are squamous cell carcinomas, with some adenocarcinomas and other types). The cancer invades the esophageal wall, narrowing the lumen, and may infiltrate surrounding structures (the trachea, vocal cord nerves, spine, etc.) or metastasize through the lymphatic or bloodstream.
• Major causes and risk factors: Age (mainly people in their 60s–70s), male sex, smoking and alcohol consumption (especially in combination), vitamin deficiency and nutritional imbalance, hot beverages, nitrosamines (charred foods and processed meat), Barrett’s esophagus (mainly associated with adenocarcinoma), esophageal stricture, achalasia, Plummer–Vinson syndrome, chemical injury (strong acids or alkalis), and previous radiation exposure.
• Major symptoms: Dysphagia — progressing from solid foods → soft foods → liquids, odynophagia, weight loss, malnutrition, cough and aspiration (due to airway invasion or reflux), hoarseness (due to vocal cord nerve involvement), hemoptysis or hematemesis, and chest or back pain (when invasion is present).

Treatment Methods and Precautions

• Treatment principles: Determined according to the stage (depth of tumor invasion and presence or absence of lymph-node or distant metastasis) and overall condition. Localized lesions are treated with curative intent, while advanced disease or distant metastasis is managed mainly with systemic and palliative treatment.
• Surgery: Curative resection (esophagectomy + reconstruction using the stomach or intestine). Examples of approaches include Ivor Lewis (thoracoabdominal) and transhiatal approaches. Extensive lymph-node dissection is performed. Surgical indications and complications (airway, cardiovascular, fistula, stricture, etc.) should be considered.
• Endoscopic treatment: For superficial (early) lesions, curative treatment may be possible with endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD).
• Chemotherapy: Used according to the stage and histologic type. For locally advanced lesions, concurrent chemotherapy and radiation therapy (chemoradiation, CRT) is widely used. In cases of systemic metastasis, chemotherapy (platinum-based agents + 5-FU-based agents, taxanes, etc.) may be used, and more recently, combination treatment with immune checkpoint inhibitors (PD‑1 inhibitors) may be applied in some cases. For adenocarcinoma, targeted therapy (e.g., trastuzumab) may be considered when HER2-positive.
• Radiation therapy: Definitive concurrent chemoradiation therapy (before surgery or instead of surgery), or palliative radiation therapy to control symptoms.
• Palliative treatment: Esophageal stent placement (to improve dysphagia), nutritional support (nasogastric tube or PEG), and management of pain and respiratory symptoms.
• Lifestyle management and precautions: Avoid alcohol and smoking, actively manage nutritional status (high-calorie and protein supplementation), adjust food texture in cases of dysphagia (soft foods and finely chopped foods), and avoid oral and esophageal irritants (hot beverages and irritating foods). Monitor for infection, nutritional deficiencies, and treatment-related adverse effects (bone marrow suppression, esophagitis, etc.) during treatment.

Checklist Before an Outpatient Visit (Items to Prepare, Records, and Example Questions)

• Items/materials to prepare:
  • List of medications currently being taken (including prescription drugs, OTC medications, supplements, and anticoagulants)
  • Past medical history and history of surgery, radiation, and chemotherapy
  • Recent test results (endoscopy findings and biopsy report, CT/PET/endoscopic ultrasound results, and blood tests)
  • Records of weight changes (weight over the past several months), food intake, and degree of dysphagia (when it began and with which foods)
  • Records of allergies and smoking and alcohol use
• Items that are useful to show the doctor during the outpatient visit: Biopsy (pathology) report, imaging (CT/PET) images or radiology reports, and copies of receipts or medical records from previous treatment.

Examples of General Questions to Ask the Doctor

• "What is my stage, and what treatment pathway is recommended?"
• "What are the expected benefits and side effects of each treatment (surgery, chemotherapy, and radiation therapy)?"
• "How should I manage my nutrition during treatment? Do you have any tips for meals and weight management?"
• "How are complications after treatment (recurrent dysphagia, stricture, etc.) and the risk of recurrence evaluated?"
• "Will the medications I am currently taking (or my underlying conditions) affect the choice of treatment?"

Examples of Disease-Specific Questions

• "In my case (based on the endoscopy and pathology results), is this an early lesion that can be treated with endoscopic resection (EMR/ESD), or is surgery necessary?"
• "To relieve dysphagia quickly, which would be more appropriate: stent placement or palliative radiation therapy? What are the advantages and disadvantages of each?"

(Note: According to the information provided, some statistics and recommendations are included, and the final treatment plan for an individual patient may vary depending on specialist evaluation, test results, and the patient's condition.)