A 35-year-old patient presents with recurrent epistaxis. Nasal endoscopy reveals a mass in the posterior nasal cavity. CT shows a highly vascular mass extending into the pterygopalatine fossa with anterior bowing of the posterior wall of the maxillary sinus. What is the most likely diagnosis?, Antrochoanal polyp, B. Inverted papilloma, Juvenile nasopharyngeal angiofibroma, D. Nasopharyngeal carcinoma, During mastoidectomy, the surgeon identifies the sigmoid sinus and follows the facial nerve through its mastoid segment. Which structure is the most reliable landmark for identifying the facial nerve at the second genu?, Lateral semicircular canal, Short process of the incus, Digastric ridge, Cog, A patient develops hoarseness following thyroidectomy. Laryngoscopy reveals one vocal fold fixed in the paramedian position. Which nerve is most likely injured?, External branch of the superior laryngeal nerve, Internal branch of the superior laryngeal nerve, Recurrent laryngeal nerve, Glossopharyngeal nerve

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