This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Progressive dysphagia initially for solids and later for liquids is the hallmark feature of carcinoma of: 
Select and explain. 
A. Oropharynx, B. Hypopharynx, C. Nasopharynx, D. All
B: Hypopharynx
Answer: B: Hypopharynx 
Explanation: Progressive dysphagia initially for solids and later for liquids is the hallmark feature of carcinoma of hypopharynx and cervical esophagus. Hypopharynx lesions usually presents with sore throat, hoarseness, otalgia and foreign body sensation. Classic causes of Intermittent dysphagia are diffuse esophageal spasm and schatzki ring.