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
Which carcinoma most commonly metastasizes to cervical lymph nodes - 
Select and explain. 
A. Maxillary sinus, B. Posterior tongue, C. Cheek, D. Hard palate
B: Posterior tongue
Answer: B: Posterior tongue 
Explanation: Ans. is 'b' i.e., Posterior tongue See below Here is the incidence of cervical lymphnode metastasis of various head & Neck tumours Posterior tongue --> 70% (Schwaz 7th/e page 638) Hard palate --> 10-25 % (7thle page 632) Buccal mucosa --> 56% (7th/e page 631) Maxillary Sinus --> Nodal metastases are rare and occur only in 10-15% cases (p 253 E.N.T. Dhingra 3/e)