ENT What is the most common cause of deafness in a patient of Nasopharyngeal Carcinoma: A Metastasis to Temporal Bone B Middle ear Infection C Serous otitis media D Infiltration of Tumour middle ear 💡 Explanation What is the most common cause of deafness in a patient of Nasopharyngeal Carcinoma: ✓ Correct Answer: C. Serous otitis media