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: Unknown
[{'content': 'A person with neck nude and B type tympanogram \nSelect and explain. \nA. Acoustic neuroma, B. Nasopharyngeal CA, C. Angiofibroma, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Information in this question:\n\xa0\nCervical adenopathy (Seek node)Most common presentation of nasopharyngeal carcinoma,\n\xa0\nType B tympanogram:- Indicates serous otitis media, which may be a complication of nasopharyngeal carcinoma due to eustachian tube blockade,\n\xa0\no Thus, among the given options, nasopharyngeal carcinoma is the answer of choice.\n\xa0\nClinical features of nasopharyngeal carcinoma\n\xa0\no Symptomatology of nasopharyngeal carcinoma is divided into five main groups:-\n\xa0\n1) Nasal symptoms\n\xa0\no Nasal obstruction, nasal discharge, denasal speech (rhinolalia clausa), epistaxis.\n\xa0\n2) Otologic symptoms\n\xa0\nOtologic symptoms are due to obstruction of eustachian tube.\n\xa0\no This results in serous or suppurative otitis media. Which causes conductive deafness.\n\xa0\nPresence of unilateral serous otitis media in adult should raise the suspicion of nasopharyngeal carcinoma a Tinnitus and dizziness may occur.\n\xa0\n3) Ophthalomoneurological symptoms\n\xa0\no These symptoms occur due to spread of tumor to the surrounding regions.\n\xa0\nSquint and diplopia due to involvement of VIth cranial nerve.\n\xa0\nOphthalmoplagia due to involvement of IVrd, IVth& Vim cranial nerve.\n\xa0\nFacial pain X reduced corneal sensations due to Vth nerve involvement a Exophthalmos and blindness due to direct extension into the orbit.\n\xa0\nJugular foramen syndrome (IXth, Xth, XIth cranial nerve involvement) due to pressure by enlarged lateral retropharyngeal lymph nodes.\n\xa0\nCranial nerve XIIth involvement due to extension of growth to hypoglossal canal.\n\xa0\nHorner’s syndrome due involvement of cervical sympathetic chain.\n\xa0\nNeck mass:- It is the most common presentation (60-90%)\n\xa0\no\xa0 Due to cervical lymphadenopathy.\n\xa0\nDistant metastasis\no Involve bone, lung, liver and other sites.', 'role': 'assistant'}]