This tumor is obtained from a 35 year-old man. It is an osteolytic lesion involving both the petrous portion of the temporal bone and the cerebellar-pontine angle. The most likely diagnosis is:

1. Choroid plexus carcinoma of the cerebellopontine angle that invade into bone.

2. Endolymphatic sac tumor of the inner ear that invade into the cerebellar-pontine angle.

3. This type of tumor is associated with Aicardi syndrome.

4. This type of tumor is associated with von Hippel-Lindau syndrome.

A. I, 2, and 3 are true.

B. Only 1 and 3 are true.

C. Only 2 and 4 are true.

D. Only 4 is true.

E. None of the above.

Answer and Discussion

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