Gross Anatomy USMLE Step 1 Practice Question
A 61-year-old man with a glomus jugulare tumor at the skull base presents with dysphagia, hoarseness, absent gag reflex, and weakness turning his head against resistance. Vital signs show BP 142/88, HR 92, RR 16, temp 37.2°C, SpO2 98%. CT with contrast reveals a hypervascular mass measuring 3.2 cm at the jugular foramen. He denies facial numbness. Which opening is most likely involved in this lesion's mass effect?
Answer choices
- AForamen ovale
- BInternal acoustic meatus
- CJugular foramenCorrect answer
- DSuperior orbital fissure
- EHypoglossal canal
- FForamen magnum
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