Patient History and Clinical Presentation
The 47-year-old male patient (from Hung Yen province) presented with a history of chronic alcohol and tobacco use for over 20 years. He visited the hospital due to persistent throat discomfort and difficulty swallowing (dysphagia) that had lasted for two months.

Diagnosis through Advanced Endoscopy
During the clinical examination, doctors utilized Narrow Band Imaging (NBI) endoscopy, which allows for the visualization of early mucosal changes and abnormal vascular patterns.

·         Hypopharynx: Endoscopy revealed an ulcerative lesion in the piriform sinus area, which was biopsy-confirmed as squamous cell carcinoma.

Esophagus: Suspecting the "field cancerization" effect (where multiple tumors develop in the upper aerodigestive tract due to shared risk factors), doctors performed a thorough esophageal screening. A secondary, early-stage malignant lesion was discovered in the middle third of the esophagus

ENT Endoscopy

Treatment Strategy
A multidisciplinary team (MDT) meeting was convened, involving specialists from the Gastroenterology, Oncology, and Otolaryngology departments. Given the complexity of dual primary cancers, the patient received a personalized, combined treatment plan:

·         Chemotherapy and Radiotherapy: Targeted at the hypopharyngeal tumor.

·         Endoscopic Treatment: For the early-stage esophageal cancer, doctors performed Endoscopic Submucosal Dissection (ESD)—a minimally invasive procedure that preserves the esophagus and ensures a high quality of life.

Medical Insights and Recommendations
According to experts at Bach Mai Hospital, simultaneous primary cancers in the head, neck, and esophagus are not uncommon, particularly in patients with a long history of smoking and drinking.

·         The "Field Cancerization" Risk: Carcinogens from tobacco and alcohol affect the entire lining of the respiratory and digestive tracts.

·         Early Screening is Key: Patients with risk factors or symptoms like hoarseness, persistent sore throat, or dysphagia should undergo NBI endoscopy.

·         Comprehensive Evaluation: When a tumor is found in the head and neck region, it is vital to screen the esophagus and lungs to rule out synchronous (simultaneous) tumors.

PET/CT image showing wall thickening in the lower third of the esophagus with fat infiltration; no invasion of the thoracic aorta; increased FDG uptake (metabolic activity

Conclusion
The success of this case demonstrates the effectiveness of integrating advanced diagnostic technology with interdisciplinary collaboration. Early detection significantly improves the prognosis and allows for less invasive treatment options.